A Renderer

Three wishes:


style sheet

A CSS style sheet.

renderer

A UA that interprets the semantics of a style sheet and renders documents that use them.

authoring tool

A UA that writes a style sheet.



A style sheet is (..)  valid according to the generic CSS grammar and the individual grammars of each feature defined.

A renderer (..) in addition to interpreting the style sheet as defined by the appropriate specifications, it supports all the features defined (..) by parsing them correctly and rendering the document accordingly.


An authoring tool (..) writes style sheets that are syntactically correct according to the generic CSS grammar and the individual grammars of each feature (..), and meet all other conformance requirements of style sheets as described.



Via the W3C, CSS Cascading and Inheritance Level 4, working draft.
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