Ambiguous recommendation on line height usage

[skynavga]

Section 7.4 states:

lineHeight permitted should be explicitly specified as there is no uniform implementation of the "normal" value at the time of this writing.

This language is ambiguous regarding "explicitly specified" since it can be specified on p, div, body, style and result in an explicit value being assigned to the specified style set that applies to a p. Probably best to rephrase as:

should be explicitly specified such that the specified style set of each p elements contains a tts:lineHeight property the value of which is not assigned by initial value fallback

[palemieux]

In spirit of being completely explicit, what about: The computed value of the tts:lineHeight attribute for a

element SHOULD NOT be "normal" as there is no uniform implementation of the "normal" value at the time of this writing. Instead, the tts:lineHeight attribute SHOULD be explicitly specified such that the specified style set of a

element contains a tts:lineHeight property the value of which is not assigned by initial value fallback.

[skynavga]

Note that the latter part allows the explicit use of "normal" which would contradict the former.

[palemieux]

What about just: The computed value of the tts:lineHeight attribute for a

element SHOULD NOT be "normal" as there is no uniform implementation of the "normal" value at the time of this writing.