draft-iab-rfc-use-of-pdf-02.txt   draft-iab-rfc-use-of-pdf-latest.txt 
Network Working Group T. Hansen, Ed. Network Working Group T. Hansen, Ed.
Internet-Draft AT&T Laboratories Internet-Draft AT&T Laboratories
Intended status: Informational L. Masinter Intended status: Informational L. Masinter
Expires: free friendship chatting in india November 18, 2016 M. Hardy Expires: free chatting in india without registration June 19, 2018 M. Hardy
Adobe Adobe
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PDF for an RFC Series Output Document Format PDF for an RFC Series Output Document Format
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Abstract Abstract
This document discusses options and requirements for the PDF This document discusses options and requirements for the PDF
rendering of RFCs in the RFC Series, as outlined in RFC 6949. It rendering of RFCs in the RFC Series, as outlined in RFC 6949. It
also discusses the use of PDF for Internet-Drafts, and available or also discusses the use of PDF for Internet-Drafts, and available or
needed software tools for producing and working with PDF. needed software tools for producing and working with PDF.
Status of free singles chat app this Memo Status of php chat system like facebook This Memo
This Internet-Draft is submitted in full conformance with the This Internet-Draft is submitted in full conformance with the
provisions of BCP 78 and BCP 79. provisions of BCP 78 and BCP 79.
Internet-Drafts are working documents of the Internet Engineering Internet-Drafts are working documents of the Internet Engineering
Task Force (IETF). Note that other groups may also distribute Task Force (IETF). Note that other groups may also distribute
working documents as Internet-Drafts. The list of current Internet- working documents as Internet-Drafts. The list of current Internet-
Drafts is at http://datatracker.ietf.org/drafts/current/. Drafts is at httpphp jquery chat like facebook s://datatracker.ietf.org/drafts/current/.
Internet-Drafts are draft documents valid for a maximum of six months Internet-Drafts are draft documents valid for a maximum of six months
and may be updated, replaced, or obsoleted by other documents at any and may be updated, replaced, or obsoleted by other documents at any
time. It is inappropriate to use Internet-Drafts as reference time. It is inappropriate to use Internet-Drafts as reference
material or to cite them other than as "work in progress." material or to cite them other than as "work in progress."
This Internet-Draft will expire on php chat box like facebook November 18, 2016. This Internet-Draft will expire on php chat like facebook free June 19, 2018.
Copyright Notice Copyright Notice
Copyright (c) 201php ajax chat like facebook 6 IETF Trust and the persons identified as the Copyright (c) 201php chat application like facebook 7 IETF Trust and the persons identified as the
document authors. All rights reserved. document authors. All rights reserved.
This document is subject to BCP 78 and the IETF Trust's Legal This document is subject to BCP 78 and the IETF Trust's Legal
Provisions Relating to IETF Documents Provisions Relating to IETF Documents
(http://trustee.ietf.org/license-info) in effect on the date of (httpphp live chat like facebook s://trustee.ietf.org/license-info) in effect on the date of
publication of this document. Please review these documents publication of this document. Please review these documents
carefully, as they describe your rights and restrictions with respect carefully, as they describe your rights and restrictions with respect
to this document. Code Components extracted from this document must to this document. Code Components extracted from this document must
include Simplified BSD License text as described in Section 4.e of include Simplified BSD License text as described in Section 4.e of
the Trust Legal Provisions and are provided without warranty as the Trust Legal Provisions and are provided without warranty as
described in the Simplified BSD License. described in the Simplified BSD License.
Table of Contents Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . online gaming chat rooms . 3 1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 3
2. Choosing PDF versions and Standards . . . . . . . . . . . . . 3 2. Choosing PDF versions and Standards . . . . . . . . . . . . . 3
3. Options and Requirements for PDF RFCs . . . . . . . . . . . . 4 3. Options and Requirements for PDF RFCs . . . . . . . . . . . . 4
3.1. "Visible" Requirements . . . . . . . . . . . . . . . . . yahoo chat room cho android . 4 3.1. "Visible" Requirements . . . . . . . . . . . . . . . . . 4
3.1.1. General Visible Requirements . . . . . . . . . . . . yahoo chat rooms for android mobile . 4 3.1.1. General Visible Requirements . . . . . . . . . . . . yahoo chat room apps android market 5
3.1.2. Page Size, Margins . . . . . . . . . . . . . . . . . yahoo chat room app for android . 5 3.1.2. Page Size, Margins . . . . . . . . . . . . . . . . . 5
3.1.3. Headers and Footers . . . . . . . . . . . . . . . . . 5 3.1.3. Headers and Footers . . . . . . . . . . . . . . . . . 5
3.1.4. Paragraph Numbering . . . . . . . . . . . . . . . . . 5 3.1.4. Paragraph Numbering . . . . . . . . . . . . . . . . . 5
3.1.5. Paged Content Layout . . . . . . . . . . . . . . . . free chat line phone numbers in san antonio . 6 3.1.5. Paged Content Layout . . . . . . . . . . . . . . . . 6
3.1.6. Typeface Choices . . . . . . . . . . . . . . . . . . free black chat line phone numbers . 6 3.1.6. Typeface Choices . . . . . . . . . . . . . . . . . . 6
3.1.7. Hyphenation and Line Breaks . . . . . . . . . . . . . 7 3.1.7. Hyphenation and Line Breaks . . . . . . . . . . . . . 7
3.1.8. Hyperlinks . . . . . . . . . . . . . . . . . . . . . free fresno chat line phone numbers . 7 3.1.8. Hyperlinks . . . . . . . . . . . . . . . . . . . . . learning english voice chat 8
3.1.9. Similarity to Other Outputs . . . . . . . . . . . . . 8 3.1.9. Similarity to Other Outputs . . . . . . . . . . . . . 8
3.2. "Invisible" Options and Requirements . . . . . . . . . . learn english voice chat free . 9 3.2. "Invisible" Options and Requirements . . . . . . . . . . learn english voice chat 10
3.2.1. Internal Text Representation . . . . . . . . . . . . cam chat for iphone 5 . 9 3.2.1. Internal Text Representation . . . . . . . . . . . . chat einstellungen iphone 5 10
3.2.2. Unicode Support . . . . . . . . . . . . . . . . . . . chat apps for iphone 5 10 3.2.2. Unicode Support . . . . . . . . . . . . . . . . . . . chat heads for iphone 5s 11
3.2.3. Image Processing (Artwork) . . . . . . . . . . . . . facebook chat for iphone 5 . 10 3.2.3. Image Processing (Artwork) . . . . . . . . . . . . . we chat for iphone 5 11
3.2.4. Text Description of Images (Alt-Text) . . . . . . . . snapchat iphone 5 10 3.2.4. Text Description of Images (Alt-Text) . . . . . . . . free chat asian dating 11
3.2.5. Metadata Support . . . . . . . . . . . . . . . . . . free chat asian dating sites . 11 3.2.5. Metadata Support . . . . . . . . . . . . . . . . . . what is the best chat room app for iphone 12
3.2.6. Document Structure Support . . . . . . . . . . . . . kolkata voice chat room list . 11 3.2.6. Document Structure Support . . . . . . . . . . . . . all voice chat room list 12
3.2.7. Embedded Files . . . . . . . . . . . . . . . . . . . chat sites for iphone . 11 3.2.7. Embedded Files . . . . . . . . . . . . . . . . . . . chat sites for iphone 4 12
3.3. Digital Signatures . . . . . . . . . . . . . . . . . . . free trial chat line number . 12 3.3. Digital Signatures . . . . . . . . . . . . . . . . . . . chat room app for iphone 13
4. References . . . . . . . . . . . . . . . . . . . . . . . . . chat room apps for iphone . 12 4. References . . . . . . . . . . . . . . . . . . . . . . . . . best free chat room app for iphone 14
4.1. References . . . . . . . . . . . . . . . . . . . . . . . free online chatting india now . 12 4.1. References . . . . . . . . . . . . . . . . . . . . . . . free games chat online 14
4.2. Informative References . . . . . . . . . . . . . . . . . simple php chat application for website . 13 4.2. Informative References . . . . . . . . . . . . . . . . . php chat application for website 14
Appendix A. History and Current Use of PDF with RFCs and Appendix A. History and Current Use of PDF with RFCs and
Internet-Drafts . . . . . . . . . . . . . . . . . . chat rooms application for android . 14 Internet-Drafts . . . . . . . . . . . . . . . . . . public chat room app android 15
A.1. RFCs . . . . . . . . . . . . . . . . . . . . . . . . . . best chat room app for android . 14 A.1. RFCs . . . . . . . . . . . . . . . . . . . . . . . . . . gay chat room apps for android 15
A.2. Internet-Drafts . . . . . . . . . . . . . . . . . . . . . chat rooms for apps android market 14 A.2. Internet-Drafts . . . . . . . . . . . . . . . . . . . . . top chat room apps for android 16
Appendix B. Paged Content Layout Quality . . . . . . . . . . . . best free online chat software 15 Appendix B. Paged Content Layout Quality . . . . . . . . . . . . free online chat room software 16
Appendix C. Tooling . . . . . . . . . . . . . . . . . . . . . . free online chatting software for pc . 15 Appendix C. Tooling . . . . . . . . . . . . . . . . . . . . . . 3d avatar chat virtual worlds 17
C.1. PDF Viewers . . . . . . . . . . . . . . . . . . . . . . . dirty chat room apps for iphone 15 C.1. PDF Viewers . . . . . . . . . . . . . . . . . . . . . . . chatroom apps for iphone 17
C.2. Printers . . . . . . . . . . . . . . . . . . . . . . . . chat room application for iphone . 16 C.2. Printers . . . . . . . . . . . . . . . . . . . . . . . . free chat online in usa 17
C.3. PDF Generation Libraries . . . . . . . . . . . . . . . . yahoo chat rooms web messenger . 16 C.3. PDF Generation Libraries . . . . . . . . . . . . . . . . online chat for iphone support 17
C.4. Typefaces . . . . . . . . . . . . . . . . . . . . . . . . online chat for iphone 16 C.4. Typefaces . . . . . . . . . . . . . . . . . . . . . . . . online chat for iphone help 18
C.5. Other Tools . . . . . . . . . . . . . . . . . . . . . . . live chat rooms uk 16 C.5. Other Tools . . . . . . . . . . . . . . . . . . . . . . . top chat rooms for android 18
Appendix D. Acknowledgements . . . . . . . . . . . . . . . . . . best chat room messenger for android 17 Appendix D. Acknowledgements . . . . . . . . . . . . . . . . . . chat room for android tablet 18
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . good chat rooms for android . 17 Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . free video and voice chat software list 19
1. Introduction 1. Introduction
The RFC Series is evolving, as outlined in [RFC6949]. Future The RFC Series is evolving, as outlined in [RFC6949]. Future
documents will use a canonical format, XML, with renderings in documents will use a canonical format, XML, with renderings in
various formats, including PDF. various formats, including PDF.
Because PDF has a wide range of capabilities and alternatives, not Because PDF has a wide range of capabilities and alternatives, not
all PDFs are "equal". For example, visually similar documents could all PDFs are "equal". For example, visually similar documents could
consist of scanned or rasterized images, or include text layout consist of scanned or rasterized images, or include text layout
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Recommendation: avoid introducing hyphenated line breaks mid-word Recommendation: avoid introducing hyphenated line breaks mid-word
into the visual display, consistent with requirements for plain text into the visual display, consistent with requirements for plain text
and HTML. and HTML.
3.1.8. Hyperlinks 3.1.8. Hyperlinks
PDF supports hyperlinks both to sections of the same document and to PDF supports hyperlinks both to sections of the same document and to
other documents. other documents.
The conversion to PDF can generate: The conversion to PDF can generate:
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o hyperlinks within the document o hyperlinks within the document
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o hyperlinks to other RFCs and Internet-Drafts o hyperlinks to other RFCs and Internet-Drafts
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o hyperlinks to external locations o hyperlinks to external locations
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o hyperlinks within a table of contents o hyperlinks within a table of contents
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o hyperlinks within an index o hyperlinks within an index
Recommendations: Recommendations:
o All hyperlinks available in the HTML rendition of the RFC should o All hyperlinks available in the HTML rendition of the RFC should
also be visible and active in the PDF produced. This includes also be visible and active in the PDF produced. This includes
both internal hyperlinks and hyperlinks to external resources. both internal hyperlinks and hyperlinks to external resources.
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o The table of contents, including page numbers, are useful when o The table of contents, including page numbers, are useful when
printed. These should also be hyperlinked to their respective printed. These should also be hyperlinked to their respective
sections. sections.
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o As specified in the section on Referencing RFCs in [RFC7322], o As specified in the section on Referencing RFCs in [RFC7322],
hyperlinks to RFCs from the references section should point to the hyperlinks to RFCs from the references section should point to the
RFC "info" page, which then links to the various formats RFC "info" page, which then links to the various formats
available. available.
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o Hyperlinks to Internet-Drafts from the references section should o Hyperlinks to Internet-Drafts from the references section should
point to the datatracker entry page for the draft, which then point to the datatracker entry page for the draft, which then
links to the various formats available. links to the various formats available.
3.1.9. Similarity to Other Outputs 3.1.9. Similarity to Other Outputs
There is some advantage to having the PDF files look like the text or There is some advantage to having the PDF files look like the text or
HTML renderings of the same document. There are several options even HTML renderings of the same document. There are several options even
so. The PDF so. The PDF
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1. could look like the text version of the document, or 1. could look like the text version of the document, or
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2. could look like the text version of the document but with 2. could look like the text version of the document but with
pictures rendered as pictures instead of using their ASCII-art pictures rendered as pictures instead of using their ASCII-art
equivalent, or equivalent, or
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3. could look like the HTML version. 3. could look like the HTML version.
Recommendation: the PDF rendition should look like the HTML Recommendation: the PDF rendition should look like the HTML
rendition, at least in spirit. Some differences from the HTML rendition, at least in spirit. Some differences from the HTML
rendition would include different typeface and size (chosen for rendition would include different typeface and size (chosen for
printing), page numbers in the table of contents and index, and the printing), page numbers in the table of contents and index, and the
use of page headers and footers. use of page headers and footers.
Most of the choices used for the [I-D.hildebrand-html-rfc] rendering Most of the choices used for the [I-D.hildebrand-html-rfc] rendering
and [I-D.flanagan-rfc-css] are thus applicable. See those documents and [I-D.flanagan-rfc-css] chat site to make new friends are thus applicable. See those documents
for specifics on the rendering of the specific XML elements. Some for specifics on the rendering of the specific XML elements. Some
notes are: notes are:
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Every place in the document that would receive an HTML ID would be Every place in the document that would receive an HTML ID would be
given an identical PDF named destination. In addition, a named given an identical PDF named destination. In addition, a named
destination will be created for each page with the form "pg-#", as destination will be created for each page with the form "pg-#", as
in "pg-35". in "pg-35".
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No pilcrows are generated or made visible. No pilcrows are generated or made visible.
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The table of contents (generated if the XML's <rfc> element's The table of contents (generated if the XML's <rfc> element's
tocInclude attribute has the value "true") will have the section tocInclude attribute has the value "true") will have the section
number linked to that section named destination, but will also number linked to that section named destination, but will also
include a page number that is linked to the page named include a page number that is linked to the page named
destination. The section title and the page number will be destination. The section title and the page number will be
separated by a visually-appropriate separator and the page numbers separated by a visually-appropriate separator and the page numbers
will be aligned with each other. will be aligned with each other.
The index (generated if the XML's <rfc> element's indexInclude The index (generated if the XML's <rfc> element's indexInclude
attribute has the value "true") will have the section number attribute has the value "true") will have the section number
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PDF offers a number of features which improve the utility of PDF PDF offers a number of features which improve the utility of PDF
files in a variety of workflows, at the cost of extra effort in the files in a variety of workflows, at the cost of extra effort in the
xml2rfc conversion process; the tradeoffs may be different for the xml2rfc conversion process; the tradeoffs may be different for the
RFC editor production of RFCs and for Internet-Drafts. RFC editor production of RFCs and for Internet-Drafts.
3.2.1. Internal Text Representation 3.2.1. Internal Text Representation
The contents of a PDF file can be represented in many ways. The PDF The contents of a PDF file can be represented in many ways. The PDF
file could be generated: file could be generated:
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o as an image of the visual representation, such as a JPEG image of o as an image of the visual representation, such as a JPEG image of
the word "IETF". That is, there might be no internal the word "IETF". That is, there might be no internal
representation of letters, words or paragraphs at all. representation of letters, words or paragraphs at all.
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o placing individual characters in position on the page, such as o placing individual characters in position on the page, such as
saying "put an 'F' here", then "put an 'T' before it", then "put saying "put an 'F' here", then "put an 'T' before it", then "put
an 'E' before that", then "put an 'I' before that" to render the an 'E' before that", then "put an 'I' before that" to render the
word "IETF". That is, there might be no internal representation word "IETF". That is, there might be no internal representation
of words or paragraphs at all. of words or paragraphs at all.
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o placing words in position on the page, such as keeping the word o placing words in position on the page, such as keeping the word
"IETF" would be kept together. That is, there might be no "IETF" would be kept together. That is, there might be no
internal representation of paragraphs at all. internal representation of paragraphs at all.
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o ensuring that the running order of text in the content stream o ensuring that the running order of text in the content stream
matches the logical reading order. That is, a sentence such as matches the logical reading order. That is, a sentence such as
'The Internet Engineering Task Force (IETF) supports the 'The Internet Engineering Task Force (IETF) supports the
Internet.' would be kept together as a sentence, and multiple Internet.' would be kept together as a sentence, and multiple
sentences within a paragraph would be kept together. sentences within a paragraph would be kept together.
All of these end up with essentially the same visual representation All of these end up with essentially the same visual representation
of the output. However, each level has tradeoffs for auxiliary uses, of the output. However, each level has tradeoffs for auxiliary uses,
such as searching or indexing, commenting and annotation, and such as searching or indexing, commenting and annotation, and
accessibility (text-to-speech). Keeping the running order of text in accessibility (text-to-speech). Keeping the running order of text in
the content stream in the proper order supports all of these the content stream in the proper order supports all of these
auxiliary uses. auxiliary uses.
In addition, the "role map" feature of PDF free chat around the world (<http://help.adobe.com/ In addition, the "role map" feature of PDF
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WS58a04a822e3e50102bd615109794195ff-7cd8.w.html>) would additionally WS58a04a822e3e50102bd615109794195ff-7cd8.w.html>) would additionally
allow for the mapping of the logical tags found in the original XML allow for the mapping of the logical tags found in the original XML
into tags in the PDF. into tags in the PDF.
Recommendations: Recommendations:
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o Text in content streams should follow the XML document's logical o Text in content streams should follow the XML document's logical
order (in the order of tags) to the extent possible. This will order (in the order of tags) to the extent possible. This will
provide optimal reuse by software that does not understand Tagged provide optimal reuse by software that does not understand Tagged
PDF. (PDF/UA requires this.) PDF. (PDF/UA requires this.)
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o It might be possible to use the "role map" annotation to capture o It might be possible to use the "role map" annotation to capture
enough of the xml2rfc source structure, to the point where it is enough of the xml2rfc source structure, to the point where it is
possible to reconstruct the XML source structure completely. possible to reconstruct the XML source structure completely.
However, there is not a compelling case to do so over embedding However, there is not a compelling case to do so over embedding
the original XML, as described in Section 3.2.7. the original XML, as described in Section 3.2.7.
3.2.2. Unicode Support 3.2.2. Unicode Support
PDF itself does not require use of Unicode. Text is represented as a PDF itself does not require use of Unicode. Text is represented as a
sequence of glyphs which then can be mapped to Unicode. sequence of glyphs which then can be mapped to Unicode.
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possible to reconstruct the XML source structure completely. possible to reconstruct the XML source structure completely.
However, there is not a compelling case to do so over embedding However, there is not a compelling case to do so over embedding
the original XML, as described in Section 3.2.7. the original XML, as described in Section 3.2.7.
3.2.2. Unicode Support 3.2.2. Unicode Support
PDF itself does not require use of Unicode. Text is represented as a PDF itself does not require use of Unicode. Text is represented as a
sequence of glyphs which then can be mapped to Unicode. sequence of glyphs which then can be mapped to Unicode.
Recommendations: Recommendations:
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PDF files generated must have the full text, as it appears in the PDF files generated must have the full text, as it appears in the
original XML. original XML.
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Unicode normalization may occur. Unicode normalization may occur.
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Text within SVG for SVG images should also have Unicode mappings. Text within SVG for SVG images should also have Unicode mappings.
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Alt-text for images should also support Unicode. Alt-text for images should also support Unicode.
3.2.3. Image Processing (Artwork) 3.2.3. Image Processing (Artwork)
The XML allows both ASCII art and SVG to be used for artwork. The XML allows both ASCII art and SVG to be used for artwork.
Recommendations: Recommendations:
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If both ASCII art and SVG are available for a picture, the SVG If both ASCII art and SVG are available for a picture, the SVG
artwork should be the preferred over the ASCII artwork. artwork should be the preferred over the ASCII artwork.
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ASCII artwork must be rendered using a monospace font. ASCII artwork must be rendered using a monospace font.
3.2.4. Text Description of Images (Alt-Text) 3.2.4. Text Description of Images (Alt-Text)
Guidelines for accessibility of PDF Guidelines for accessibility of PDF free physic chat reading <http://www.w3.org/TR/WCAG20-
indian chat room apps for android <http://www.w3.org/TR/WCAG20-TECHS/PDF1.html> recommend that images, facebook ipad chat ausschalten TECHS/PDF1.html> recommend that images, formulas, and other non-text
formulas, and other non-text items provide textual alternatives, items provide textual alternatives, using the '/Alt' Tag in PDF to
using the '/Alt' Tag in PDF to provide human-readable text that can provide human-readable text that can be vocalized by text-to-speech
be vocalized by text-to-speech technology. technology.
Recommendation: Any alt-text for artwork and figures available in the Recommendation: Any alt-text for artwork and figures available in the
XML source should be stored using the PDF /Alt property. Internet XML source should be stored using the PDF /Alt property. Internet
draft authors and the RFC editor should ensure inclusion of alt-text draft authors and the RFC editor should ensure inclusion of alt-text
for all SVG or images, within the XML source. for all SVG or images, within the XML source.
3.2.5. Metadata Support 3.2.5. Metadata Support
Metadata encodes information about the document authors, the document Metadata encodes information about the document authors, the document
series, date created, etc. Having this metadata within the PDF file series, date created, etc. Having this metadata within the PDF file
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navigation aid. navigation aid.
The section structure of an RFC can be mapped into the PDF elements The section structure of an RFC can be mapped into the PDF elements
for the document structure. This will allow the bookmark feature of for the document structure. This will allow the bookmark feature of
PDF readers to be used to quickly access sections of the document. PDF readers to be used to quickly access sections of the document.
Recommendation: The section structure of an RFC should be mapped into Recommendation: The section structure of an RFC should be mapped into
the PDF elements for the document structure. This would include the PDF elements for the document structure. This would include
section headings for the boilerplate sections such as the Abstract, section headings for the boilerplate sections such as the Abstract,
Status of the Document, Table of Contents, and Author Addresses, plus Status of the Document, Table of Contents, and Author Addresses, plus
the obvious section headings that are normally included in the Table the obvious section headings that are normally included in the
of Contents. If possible, this should be done in a way that the same Table of Contents. If possible, this should be done in a way that
fragment identifiers for the HTML version of the RFC will work for the same fragment identifiers for the HTML version of the RFC will
the PDF version. work for the PDF version.
3.2.7. Embedded Files 3.2.7. Embedded Files
PDF has the capability of including other files; the files may be PDF has the capability of including other files; the files may be
labeled both by a media type and a role, the AFRelationship key labeled both by a media type and a role, the AFRelationship key
[PDFA3]. In this way, the PDF file acts also as a container. [PDFA3]. In this way, the PDF file acts also as a container.
Embedded content may be compressed. Embedded content may be compressed.
Many PDF viewers support the ability to view and extract embedded Many PDF viewers support the ability to view and extract embedded
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Requirements and Future Development", RFC 6949, Requirements and Future Development", RFC 6949,
DOI 10.17487/RFC6949, May 2013, DOI 10.17487/RFC6949, May 2013,
<https://www.rfc-editor.org/info/rfc6949>. <https://www.rfc-editor.org/info/rfc6949>.
[RFC7322] Flanagan, H. and S. Ginoza, "RFC Style Guide", RFC 7322, [RFC7322] Flanagan, H. and S. Ginoza, "RFC Style Guide", RFC 7322,
DOI 10.17487/RFC7322, September 2014, DOI 10.17487/RFC7322, September 2014,
<https://www.rfc-editor.org/info/rfc7322>. <https://www.rfc-editor.org/info/rfc7322>.
[I-D.flanagan-nonascii] [I-D.flanagan-nonascii]
Flanagan, H., "The Use of Non-ASCII Characters in RFCs", Flanagan, H., "The Use of Non-ASCII Characters in RFCs",
draft-flanagan-nonascii-06 (work in progress), draft-flanagan-nonascii-06 (work in progress), November
November 2015. 2015.
[I-D.flanagan-rfc-css] [I-D.flanagan-rfc-css]
Flanagan, H., "CSS Requirements for RFCs", Flanagan, H., "CSS Requirements for RFCs", bluetooth chat between iphone android draft-flanagan-
top 100 single malt scotch draft-flanagan-rfc-css-04 (work in progress), top ten single malt scotch rfc-css-04 (work in progress), September 2015.
September 2015.
[I-D.hardy-pdf-mime] [I-D.hardy-pdf-mime]
Hardy, M., Masinter, L., Markovic, D., Johnson, D., and M. Hardy, M., Masinter, L., Markovic, D., Johnson, D., and M.
Bailey, "The application/pdf Media Type", Bailey, "The application/pdf Media Type", snapchat iphone 5c draft-hardy-pdf-
snapchat iphone 5 screenshot draft-hardy-pdf-mime-05 (work in progress), February 2017. snapchat iphone 5 filter mime-05 (work in progress), February 2017.
[I-D.hildebrand-html-rfc] [I-D.hildebrand-html-rfc]
Hildebrand, J. and P. Hoffman, "HyperText Markup Language Hildebrand, J. and P. Hoffman, "HyperText Markup Language
Request For Comments Format", draft-hildebrand-html-rfc-10 Request For Comments Format", draft-hildebrand-html-rfc-10
(work in progress), August 2015. (work in progress), August 2015.
[I-D.housley-rfc-and-id-signatures] [I-D.housley-rfc-and-id-signatures]
Housley, R., "Digital Signatures on RFC and Internet-Draft Housley, R., "Digital Signatures on RFC and Internet-Draft
Documents", draft-housley-rfc-and-id-signatures-03 (work Documents", draft-housley-rfc-and-id-signatures-03 (work
in progress), June 2016. in progress), June 2016.
URIs snapchat iphone 5 effect 4.3. URIs
[1] snapchat iphone 5 update <https://sourceforge.net/projects/sourcesans.adobe/ [1] snapchat iphone 5 not working https://sourceforge.net/projects/
snapchat iphone 5 tricks ?source=directory> snapchat iphone 5 problems sourcesans.adobe/?source=directory
[2] snapchat iphone 5s geht nicht <https://sourceforge.net/projects/sourceserifpro.adobe/ [2] good chat room apps iphone https://sourceforge.net/projects/
chat luong iphone 5s ?source=directory> top ten single malt whiskeys sourceserifpro.adobe/?source=directory
[3] dirty chat room app for android <https://sourceforge.net/projects/sourcecodepro.adobe/ [3] chat room app for android https://sourceforge.net/projects/
best chat room app for android india ?source=drectory> good chat room apps for android sourcecodepro.adobe/?source=drectory
[4] chat room apps for android <https://www.rosettatype.com/Skolar> [4] america's hottest free chat line https://www.rosettatype.com/Skolar
[5] free american chat line numbers <https://www.google.com/get/noto/> [5] america's best free chat line https://www.google.com/get/noto/
Appendix A. History and Current Use of PDF with RFCs and Internet- Appendix A. History and Current Use of PDF with RFCs and Internet-
Drafts Drafts
NOTE: this section is meant as an overview to give some background. NOTE: this section is meant as an overview to give some background.
A.1. RFCs A.1. RFCs
The RFC series has for a long time accepted Postscript renderings of The RFC series has for a long time accepted Postscript renderings of
RFCs, either in addition to or instead of the text renderings of RFCs, either in addition to or instead of the text renderings of
skipping to change at page 15, line 10free african american phone chat line ¶ skipping to change at page 16, line 14learn english via voice chat ¶
rendering of RFCs. Usually, this has been a print of the text file rendering of RFCs. Usually, this has been a print of the text file
that does not take advantage of any of the broader PDF functionality, that does not take advantage of any of the broader PDF functionality,
unless there was a Postscript version of the RFC, which would then be unless there was a Postscript version of the RFC, which would then be
used by the RFC editor to generate the PDF. used by the RFC editor to generate the PDF.
A.2. Internet-Drafts A.2. Internet-Drafts
In addition to PDFs generated and published by the RFC editor, the In addition to PDFs generated and published by the RFC editor, the
IETF tools community has also long supported PDF for Internet-Drafts. IETF tools community has also long supported PDF for Internet-Drafts.
Most RFCs start with Internet-Drafts, edited by individual authors. Most RFCs start with Internet-Drafts, edited by individual authors.
The Internet-Drafts submission tool at The Internet-Drafts submission tool at 3d chat games with avatars free online https://datatracker.ietf.org/
3d chat games with avatars https://datatracker.ietf.org/submit/ accepts PDF and Postscript files chatbox for website php submit/ accepts PDF and Postscript files in addition to the
in addition to the (required) text submission and (currently (required) text submission and (currently optional) XML. If a PDF
optional) XML. If a PDF wasn't submitted for a particular version of wasn't submitted for a particular version of an Internet-Draft, the
an Internet-Draft, the tools would generate one from the Postscript, tools would generate one from the Postscript, HTML, or text.
HTML, or text.
Appendix B. Paged Content Layout Quality Appendix B. Paged Content Layout Quality
The process of creating a paged document from running text typically The process of creating a paged document from running text typically
involves ensuring that related material is present on the same page involves ensuring that related material is present on the same page
together, and that artifacts of pagination don't interfere with easy together, and that artifacts of pagination don't interfere with easy
reading of the document. Typical high-quality layout processors do reading of the document. Typical high-quality layout processors do
several things: several things:
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Widow and Orphan Management: Widows and orphans Widow and Orphan Management: Widows and orphans
(<https://en.wikipedia.org/wiki/Widows_and_orphans>) should be (<https://en.wikipedia.org/wiki/Widows_and_orphans>) should be
avoided automatically (unless the entire paragraph is only one avoided automatically (unless the entire paragraph is only one
line). Ensure that a page break does not occur after the first line). Ensure that a page break does not occur after the first
line of a paragraph (orphans), if necessary, using slightly longer line of a paragraph (orphans), if necessary, using slightly longer
page sizes. Similarly, ensure that a page break does not occur page sizes. Similarly, ensure that a page break does not occur
before the last line of a paragraph (widows). before the last line of a paragraph (widows).
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Keep Section Heading Contiguous: Do not insert a page break Keep Section Heading Contiguous: Do not insert a page break
immediately after a section heading. If there isn't room on a immediately after a section heading. If there isn't room on a
page for the first (two) lines of a section after the section page for the first (two) lines of a section after the section
heading, insert a page break before the heading. heading, insert a page break before the heading.
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Avoid Splitting Artwork: Figures should not be split from figure Avoid Splitting Artwork: Figures should not be split from figure
titles. If possible, keep the figure on the same page as the titles. If possible, keep the figure on the same page as the
(first) mention of the figure. (first) mention of the figure.
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Headers for Long Tables after Page Breaks: Another common option in Headers for Long Tables after Page Breaks: Another common option in
producing paginated documents is to include the column headings of producing paginated documents is to include the column headings of
a table if the table cannot be displayed on a single page. a table if the table cannot be displayed on a single page.
Similarly, tables should not be split from the table titles. Similarly, tables should not be split from the table titles.
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keepWithNext and keepWithPrevious: The XML attributes of keepWithNext and keepWithPrevious: The XML attributes of
"keepWithNext" and "keepWithPrevious" should be followed whenever "keepWithNext" and "keepWithPrevious" should be followed whenever
possible. possible.
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Whitespace Preservation: The XML entities such as NBSP and NBHYPHEN Whitespace Preservation: The XML entities such as NBSP and NBHYPHEN
should be followed as directed whenever possible. should be followed as directed whenever possible.
Appendix C. Tooling Appendix C. Tooling
This section discusses tools for viewing, comparing, creating, This section discusses tools for viewing, comparing, creating,
manipulating, transforming PDF files, including those currently in manipulating, transforming PDF files, including those currently in
use by the RFC editor and Internet-Drafts, as well as outlining use by the RFC editor and Internet-Drafts, as well as outlining
available PDF tools for various processes. available PDF tools for various processes.
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While almost all viewers also support printing of PDF files, printing While almost all viewers also support printing of PDF files, printing
is one of the most important use cases for PDFs. Some printers have is one of the most important use cases for PDFs. Some printers have
direct PDF support. direct PDF support.
C.3. PDF Generation Libraries C.3. PDF Generation Libraries
Because the xml2rfc format is a unique format, software for Because the xml2rfc format is a unique format, software for
converting XML source documents to the various formats will be converting XML source documents to the various formats will be
needed, including PDF generation. needed, including PDF generation.
One promising direction is suggested in best chat room application for android <http://bringijt.cf/tech/ One promising direction is suggested in
apple ipad chat room webdav/rfc2629xslt/rfc2629xslt.html#output.pdf.fop>: using XSLT to nimbuzz chat rooms for iphone 4 <http://bringijt.cf/tech/webdav/rfc2629xslt/
generate XSL-FO which is then processed by a formatting object chat rooms for iphone 4 rfc2629xslt.html#output.pdf.fop>: using XSLT to generate XSL-FO which
processor such as Apache FOP. is then processed by a formatting object processor such as Apache
FOP.
Several libraries are also available for generating PDF signatures. Several libraries are also available for generating PDF signatures.
The choice of library to use for xml2pdf will depend on many factors: The choice of library to use for xml2pdf will depend on many factors:
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programming language, quality of implementation, quality of PDF programming language, quality of implementation, quality of PDF
generated, support, cost, availability, and so forth. generated, support, cost, availability, and so forth.
C.4. Typefaces C.4. Typefaces
This section is intended to discuss available typefaces that might This section is intended to discuss available typefaces that might
satisfy requirements. Some openly available fixed-width typefaces satisfy requirements. Some openly available fixed-width typefaces
(without extensive Unicode support, however) include: (without extensive Unicode support, however) include:
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o Source Sans [1] o Source Sans [1]
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o Source Serif Pro [2] o Source Serif Pro [2]
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o Source Code Pro [3] o Source Code Pro [3]
A font that looks promising for its broad Unicode support is
Skolar [4], but it requires licensing. Another potentially useful A font that looks promising for its broad Unicode support is Skolar
set of typefaces is the Noto [5] family from Google. [4], but it requires licensing. Another potentially useful set of
typefaces is the Noto [5] family from Google.
C.5. Other Tools C.5. Other Tools
In addition to generating and viewing PDF, other categories of PDF In addition to generating and viewing PDF, other categories of PDF
tools are available and may be useful both during specification tools are available and may be useful both during specification
development and for published RFCs. These include tools for development and for published RFCs. These include tools for
comparing two PDFs, checkers that could be used to validate the comparing two PDFs, checkers that could be used to validate the
results of conversion, reviewing and commentary tools that attach results of conversion, reviewing and commentary tools that attach
annotations to PDF files, and digital signature creation and annotations to PDF files, and digital signature creation and
validation. validation.
skipping to change at page 17, line 28bangla voice chat room list ¶ skipping to change at page 18, line 42iphone 5s chat einstellungen ¶
validation. validation.
Validation of an arbitrary author-generated PDF file would be quite Validation of an arbitrary author-generated PDF file would be quite
difficult; there are few PDF validation tools. However, if RFCs and difficult; there are few PDF validation tools. However, if RFCs and
Internet-Drafts are generated by conversion from XML via xml2rfc, Internet-Drafts are generated by conversion from XML via xml2rfc,
then explicit validation of PDF and adherence to expected profiles then explicit validation of PDF and adherence to expected profiles
would mainly be useful to ensure that xml2rfc has functioned would mainly be useful to ensure that xml2rfc has functioned
properly. properly.
Recommendations: Recommendations:
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o Discourage (but allow) submission of a PDF representation for o Discourage (but allow) submission of a PDF representation for
Internet-Drafts. In most cases, the PDF for an Internet-Draft Internet-Drafts. In most cases, the PDF for an Internet-Draft
should be produced automatically when XML is submitted, with an should be produced automatically when XML is submitted, with an
opportunity to verify the conversion. opportunity to verify the conversion.
Appendix D. Acknowledgements Appendix D. Acknowledgements
The input of the following people is gratefully acknowledged: Nevil The input of the following people is gratefully acknowledged: Nevil
Brownlee (ISE), Brian Carpenter, Chris Dearlove, Martin Duerst, Brownlee (ISE), Brian Carpenter, Chris Dearlove, Martin Duerst,
Heather Flanagan (RSE), Joe Hildebrand, Paul Hoffman, Duff Johnson, Heather Flanagan (RSE), Joe Hildebrand, Paul Hoffman, Duff Johnson,
Ted Lemon, gay chat apps for android Sean Leonard, Henrik Levkowetz, Julian Reschke, Adam Ted Lemon, Henrik Levkowetz, Julian Reschke, Adam Roach, Leonard
Roach, Leonard Rosenthol, Alice Russo, Robert Sparks, Andrew Rosenthol, Alice Russo, Robert Sparks, Andrew Sullivan, and Dave
Sullivan, and Dave Thaler. Thaler.
Authors' Addresses Authors' Addresses
Tony Hansen (editor) Tony Hansen (editor)
AT&T Laboratories AT&T Laboratories
200 Laurel Ave. South 200 Laurel Ave. South
Middletown, NJ 07748 Middletown, NJ 07748
USA USA
Email: [email protected] Email: [email protected]
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