-
optionally, synthesize a unique id attribute on each resulting
@@ -18079,7 +18124,7 @@ the expanded-nominal-requested-line-rectangle, wh
line area of a paragraph, and (2) the dimensions of the expanded-rectangle
of each inline area child of the line area, which may vary for
each inline area of each line area of a paragraph.
-The phrase line height, as referred to above, should not be confused with the computed value of the style property associated with
+
The phrase line height, as referred to above, should not be confused with the computed value of the style property associated with
the tts:lineHeight attribute. This latter value serves as a parameter for computing the
half leading applied to a line area and individual inline areas,
which are, respectively, a parameter for determining (1) the dimensions of the expanded-nominal-requested-line-rectangle
@@ -18527,7 +18572,7 @@ styling of content.
animate
-The animate element expresses a series of changes (animations) to be applied (targeted) to one or more style property attributes of associated elements.
+The animate element expresses a series of changes (animations) to be applied (targeted) to one or more styling attributes of associated elements.
An animate element may appear as either (1) a child of a
content element or a region element,
referred to as inline animation, or
@@ -18568,14 +18613,15 @@ elements in the Metadata.class
An out-of-line animate element
must specify an xml:id attribute.
-Style property attributes targeted by an animate element are specified directly using
-attributes in the TT Style Namespaces or in a namespace that is not a TT Namespace, where the list (sequence) of animation values
+
Styling attributes are directly targeted by an animate element,
+where the list (sequence) of animation values
adhere to the <animation-value-list> syntax, and where each
constituent <animation-value> adheres to the syntax of the specified
attribute.
In contrast with , §19.2.12, a single animate element, as defined here, may be used to
-perform continuous animations on a set of targeted style property attributes instead of being limited to targeting a single style property attribute.
+perform continuous animations on a set of targeted style attributes instead of being limited to targeting a
+single styling attribute.
In , this would require the use of multiple animate elements rather than a single animate element.
Furthermore, by using direct specification of animated style property and key values, it is not necessary to employ the from,
to, by, or values animation value attributes defined by , §19.2.9.
@@ -18584,7 +18630,7 @@ In , this would require the use of multiple animate, §19.2, as constrained or further clarified below:
The attributes targeted by an animate element and the values to be applied to these attributes are
-specified by direct use of attributes in the TT Style Namespaces or a namespace that is not a TT Namespace;
+specified by direct use of styling attributes;
therefore, the attributeName, from, to, by, and values attributes defined by
are not supported by this version of TTML.
@@ -18778,7 +18824,7 @@ defined to be coterminous with the root
The set element expresses one or more a discrete changes (animations) to be applied (targeted) to style property attributes
+
The set element expresses one or more a discrete changes (animations) to be applied (targeted) to styling attributes
of associated elements.
A set element may appear as either (1) a child of a
content element or a region element,
@@ -18817,19 +18863,20 @@ elements in the Metadata.class
An out-of-line set element
must specify an xml:id attribute.
-Style property attributes targeted by an set element are specified directly using
+
Style attributes targeted by an set element are specified directly using
attributes in the TT Style Namespaces or in a namespace that is not some TT Namespace, where the single target animation (key) value
adheres to the <animation-value> syntax.
In contrast with , §19.2.13, a single set element, as defined here, may be used to
-perform discrete animations on a set of targeted style property attributes instead of being limited to targeting a single style property attribute.
+perform discrete animations on a set of targeted styling attributes instead of being limited to targeting a
+single styling attribute.
In , this would require the use of multiple set elements rather than a single set element.
Except for the constraints or variations enumerated below, the semantics of the set element and its attributes
enumerated above are defined to be those specified by , §19.2.13:
The attributes targeted by a set element and the discrete values to be applied to these attributes are
-specified by direct use of attributes in the TT Style Namespaces or in a namespace that is not a TT Namespace (as opposed to using SVG's
+specified by direct use of styling attributes (as opposed to using SVG's
attributeName and to attributes).
For example, specifying tts:color="red" is
@@ -22293,10 +22340,10 @@ for the fill attribute of the #set-multiple-styles
A TTML transformation processor supports the
#set-multiple-styles feature if it recognizes and is capable of
-transforming multiple attributes in the TT Style Namespaces when specified on a set element.
+transforming multiple styling attributes when specified on a set element.
A TTML presentation processor supports the
#set-multiple-styles feature if it implements presentation semantic support
-for multiple attributes in the TT Style Namespaces when specified on a set element.
+for multiple styling attributes when specified on a set element.
#set-repeat
@@ -25660,7 +25707,7 @@ and its descendant elements:
no end attribute is specified;
no region attribute is specified;
no timeContainer attribute is specified;
no attribute in the TT Style Namespaces is specified;
no attribute in the TT Style Namespaces is specified;
no set element is present;
no significant text node is not a child of a
span element that contains no other child.