There are some dialogs that can be used right now in the css definition file. Below you will find a list of them. The dialog name is between parenthesis - as it must be in the definition file itself - the “Url” points to the page of the CSS2 specification that defines the dialog's value, and the “Used by” field lists the properties that use this dialog.
(angle): insert an angle.
Url: http://www.w3.org/TR/CSS2/syndata.html#value-def-angle
Used by: azimuth.
(attr): insert the content of one tag's attribute.
Url: http://www.w3.org/TR/CSS2/generate.html#propdef-content
Used by: content.
(background): let you select various values to a background property.
Url: http://www.w3.org/TR/CSS2/colors.html#propdef-background
Used by: background.
(border): add value to a border property. Set the value for all borders.
Url: http://www.w3.org/TR/CSS2/box.html#propdef-border
Used by: border.
(border-width): add the width to one border.
Url: http://www.w3.org/TR/CSS2/box.html#propdef-border
Used by: border-top-width, border-right-width, border-bottom-width, and border-left-width.
(border-width-style-color): set the width style and color of one border.
Url: http://www.w3.org/TR/CSS2/box.html#propdef-border
Used by: border-top, border-right, border-bottom, border-left.
(increment-reset): set/reset the increment of a counter property.
Url: http://www.w3.org/TR/CSS2/generate.html#counters
Used by: counter-increment, counter-reset.
(counter): set a counter to a content property.
Url: http://www.w3.org/TR/CSS2/generate.html#counters
Used by: content.
(string): add a string as value for a property.
Url: http://www.w3.org/TR/CSS2/syndata.html#value-def-string
Used by: content, quotes, and text-align.
(uri): set a url as value for a property with the url() function.
Url: http://www.w3.org/TR/CSS2/syndata.html#value-def-uri
Used by: background-image, image, content, cue, cue-after, cue-before, cursor, and list-style-image.
(font): fill in the values of one border property.
Url: http://www.w3.org/TR/CSS2/box.html#border-properties
Used by: border.
(font-family): set the font's family.
Url: http://www.w3.org/TR/CSS2/fonts.html#propdef-font-family
Used by: font-family.
(font-size): set the size of a font.
Url: http://www.w3.org/TR/CSS2/fonts.html#propdef-font-size
Used by: font-size.
(identifier): set an identifier as value for a property.
Url: http://www.w3.org/TR/CSS2/syndata.html#value-def-identifier
Used by: page.
(integer): add an integer number value to a property.
Url: http://www.w3.org/TR/CSS2/syndata.html#value-def-integer
Used by: windows, z-index, font-size-adjust, and orphans.
(length): set a length as value for a property.
Url: http://www.w3.org/TR/CSS2/syndata.html#value-def-length
Used by: marker-offset, and word-spacing.
(list-style): set the style of the markers in a list. It can be numerical, graphical, or alphabetical.
Url: http://www.w3.org/TR/CSS2/generate.html#propdef-list-style
Used by: list-style.
(margin): set all margin values (top, left, bottom and right).
Url: http://www.w3.org/TR/CSS2/box.html#propdef-margin
Used by: margin.
(margin-width): set the width of one margin.
Url: http://www.w3.org/TR/CSS2/box.html#value-def-margin-width
Used by: margin-top, margin-right, margin-bottom, and margin-left.
(number): set a real number as value for a property. It is used by aural properties.
Url: http://www.w3.org/TR/CSS2/syndata.html#value-def-number
Used by: pitch-range, richness, speech-rate, stress, and volume.
(padding): set all paddings in a box element.
Url: http://www.w3.org/TR/CSS2/box.html#propdef-padding
Used by: padding.
(pause): set a pause in an aural property.
Url: http://www.w3.org/TR/CSS2/aural.html#propdef-pause
Used by: pause.
(percentage): set a percentage as value for a property.
Url: http://www.w3.org/TR/CSS2/syndata.html#value-def-percentage
Used by: pause, and volume.
(percentage-length): it is used by properties that can take as value one percentage or a numerical length.
Url: http://www.w3.org/TR/CSS2/syndata.html#values
Used by: right, text-indent, top, width, vertical-align, background-position, border, bottom, height, max-height, max-width, min-height, min-width, padding-top, padding-right, padding-bottom, and padding-left.
(play-during): set a sound to be played and the repeat or mixing properties of this sound, in aural style sheets.
Url: http://www.w3.org/TR/CSS2/aural.html#propdef-play-during
Used by: play-during.
(quotes): set what characters will be used as quotes. Commonly used to set the quotes based in the language being used. It works with the content property when it sets its values to open-quote or close-quote.
Url: http://www.w3.org/TR/CSS2/generate.html#propdef-quotes
Used by: quotes.
(shape): set the rectangle of a clip property, with the rect() function.
Url: http://www.w3.org/TR/CSS2/visufx.html#value-def-shape
Used by: clip.
(size-length): it is used by properties that can get as value a size number, or a length identified by a number and the unit used to define the length.
Url: http://www.w3.org/TR/CSS2/syndata.html#values
Used by: size.
(text-shadow): set the x and y offset and blur of a shadow in the text.
Url: http://www.w3.org/TR/CSS2/text.html#propdef-text-shadow
Used by: text-shadow.
(voice-family): add a voice set, and generic voice family to aural style sheets.
Url: http://www.w3.org/TR/CSS2/aural.html#propdef-voice-family
Used by: voice-family.