# css2.1 subset - aural properties only, see t/build.t, t/CSS/Aural/...
'azimuth'	<angle> | [[ left-side | far-left | left | center-left | center | center-right | right | far-right | right-side ] || behind ] | leftwards | rightwards | inherit	center	 	yes	 	aural
'cue-after'	<uri> | none | inherit	none	 	no	 	aural
'cue-before'	<uri> | none | inherit	none	 	no	 	aural
'cue'	[ 'cue-before' || 'cue-after' ] | inherit	see individual properties	 	no	 	aural
'elevation'	<angle> | below | level | above | higher | lower | inherit	level	 	yes	 	aural
'pause'	[ [<time> | <percentage>]{1,2} ] | inherit	see individual properties	 	no	see descriptions of 'pause-before' and 'pause-after'	aural
'pause-after'	<time> | <percentage> | inherit	0	 	no	see prose	aural
'pause-before'	<time> | <percentage> | inherit	0	 	no	see prose	aural
'pitch-range'	<number> | inherit	50	 	yes	 	aural
'pitch'	<frequency> | x-low | low | medium | high | x-high | inherit	medium	 	yes	 	aural
'play-during'	<uri> [ mix || repeat ]? | auto | none | inherit	auto	 	no	 	aural
'richness'	<number> | inherit	50	 	yes	 	aural
'speak'	normal | none | spell-out | inherit	normal	 	yes	 	aural
'speak-header'	once | always | inherit	once	elements that have table header information	yes	 	aural
'speak-numeral'	digits | continuous | inherit	continuous	 	yes	 	aural
'speak-punctuation'	code | none | inherit	none	 	yes	 	aural
'speech-rate'	<number> | x-slow | slow | medium | fast | x-fast | faster | slower | inherit	medium	 	yes	 	aural
'stress'	<number> | inherit	50	 	yes	 	aural
'voice-family'	[<generic-voice> | <specific-voice> ]# | inherit	depends on user agent	 	yes	 	aural
	<generic-voice> := male | female | child
	<specific-voice> := <identifier> | <string>
'volume'	<number> | <percentage> | silent | x-soft | soft | medium | loud | x-loud | inherit	medium	 	yes	refer to inherited value	aural
# snick in a non-aural 'boxed' property
'border-color'	[ <color> | transparent ]{1,4} | inherit	see individual properties	 	no	 	visual
'border-top-color' 'border-right-color' 'border-bottom-color' 'border-left-color'	<color> | transparent | inherit	the value of the 'color' property	 	no	 	visual
