Appendix Q: Changes

This appendix is informative, not normative.

This appendix summarizes the changes from the previous publication of SVG 1.1 Second Edition.

Q.1 Stylistic changes

A number of stylistic changes have been made to the specification to make it more readable. These include the following:

Correction of spelling and grammatical errors
Improvements to markup
Stylistic changes
Correction of broken links
Correction of some examples which had incorrect markup

Q.2 Backports from SVG Tiny 1.2

In some cases, discussion of Last Call comments or of individual testcases revealed that the wording in SVG 1.1 First Edition had been imprecise and that compatible, but better, wording was available in the SVG Tiny 1.2 Recommendation. In several cases, noted below, that wording was backported to SVG 1.1 Second Edition. Additional clarifying examples were also backported from that specification.

Q.3 Substantial changes

In addition to many minor typographical corrections and the stylistic changes mentioned above, the following substantial changes were made in response to Last Call comments.

Q.3.1 Across the whole document

Updated some inline references which still pointed to older versions of specifications, even though the actual References section had been updated.

Q.3.2 Introduction chapter

Clarified that any property may be specified on any stylable element, regardless of whether it is defined to apply to that element.

Q.3.3 Basic Data Types and Interfaces chapter

Added missing definitions for <name> and <XML-Name> grammar symbols.
Added grammar symbols for <list-of-family-names> and <list-of-strings> instead of referencing these types as <string>+ etc., which were not precisely defined.

Q.3.4 Document Structure chapter

Resolved an inconsistency in the definition of when ‘preserveAspectRatio’ on an SVG document referenced from an ‘image’ is ignored.

Q.3.5 Coordinate Systems, Transformations and Units chapter

Clarified intrinsic sizing of SVG document fragments, in response to CSS WG request (backport from SVG Tiny 1.2).
Clarified that units are required on lengths in the ‘style’ attribute.

Q.3.6 Basic Shapes chapter

Specified exactly how the rounded corner radii on the ‘rect’ element are computed when one or both of ‘rx’ and ‘ry’ are not specified.

Q.3.7 Text chapter

Clarified how the ‘direction’ property affects text elements.
Fixed bidirectional text handling (backport from SVG Tiny 1.2).
Noted that space glyphs do not render, even if the font in use has a visible glyph.

Q.3.8 Painting chapter

Noted that marker orientation is explicitly undefined in certain cases.

Q.3.9 Color chapter

Updated reference from ICC v.3.2 to v.4.2.

Q.3.10 Gradients and Patterns chapter

Removed remaining references to the non-existent ‘solidColor’ element.

Q.3.11 Clipping, Masking and Compositing chapter

Clarified that the ‘clip-path’ property applies to the ‘clipPath’ element.
Clarified that the ‘opacity’ and ‘filter’ properties do not apply to the ‘mask’ element.
Made the ‘color-interpolation’ property apply to the ‘mask’ element.

Q.3.12 Filter Effects chapter

Clarified that the default filter primitive subregion is the filter region, and that percentages are relative to the viewport when ‘primitiveUnits’ is set to 'userSpaceOnUse'.
Tightened the definitions in the ‘feComponentTransfer’ formulae.
Defined how non-integer values in ‘filterRes’ are rounded.
Provided a better definition for the ‘bias’ attribute on ‘feConvolveMatrix’.
Clarified that the clipping rectangle defined by ‘x’, ‘y’, ‘width’ and ‘height’ on a filter primitive element apply both to its inputs and output.
Clarified the interpretation of the ‘azimuth’ and ‘elevation’ attributes on ‘feDistantLight’.

Q.3.13 Interactivity chapter

Improved the specified handling of pointer events.
Noted that whether pointer events are captured by a root ‘svg’ element when the SVG content appears in an embedding context (such as a parent HTML document) is explicitly undefined.

Q.3.14 Linking chapter

Clarified that at most one of each type of SVG view attribute may appear in a complete SVG view specification.
Added a suggestion to highlight the target of an SVG view specification, and that this can be controlled by the author with a :target selector.

Q.3.15 Animation chapter

Clarified paced animations (backport from SVG Tiny 1.2).
Clarified additivity of color values (backport from SVG Tiny 1.2).
Added an example of animation of namespaced attributes (backport from SVG Tiny 1.2).
Defined how accumulation of repeated transform animations is performed.
Deprecated ‘animateColor’, made the ‘color-interpolation’ property apply to ‘animate’ and made SVGAnimateElement and SVGAnimateColorElement inherit from SVGStylableElement.
Changed the behavior of discrete to-animations to be more consistent with other kinds of discrete animations.

Q.3.16 Conformance Criteria appendix

Corrected inaccurate usage of Content-Transfer-Encoding with gzipped content served over HTTP (backport from SVG Tiny 1.2).
Fixed the wording surrounding zero-length subpath linecap handling not to refer to zero-length path segments.

Q.3.17 References appendix

Updated the following references:

Old	New
[ICC32]	[ICC42]
ISO/IEC 10918-1:1994 [JPEG]	ISO/IEC 10918-1:1994/Cor 1:2005 [JPEG]
Unicode 5.1.0 [UNICODE]	Unicode 6.0.0 [UNICODE]
XLink 1.0 [XLINK]	XLink 1.1 [XLINK]
XML Base [XML-BASE]	XML Base (Second Edition) [XML-BASE]
Namespace in XML 1.0 (Second Edition) [XML-NS]	Namespaces in XML 1.0 (Third Edition) [XML-NS]
OpenType Specification Version 1.5 [OPENTYPE]	OpenType Specification Version 1.6 [OPENTYPE]
SMIL 1.0 [SMIL1]	SMIL 3.0 [SMIL]

Q.3.18 Attribute Index appendix

Added a column to the attribute index showing whether the attribute is animatable.

Q.3.19 Media Type Registration appendix

Added Macintosh Universal Type Identifier code, Windows Clipboard Name and Fragment Identifiers sections to the registration.