Improve documentation of face numbers
* doc/lispref/display.texi (Face Functions): Mention where the face number is used and that it depends on the 'face' property of the face symbol. Improve indexing.
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* doc/lispref/display.texi (Face Functions): Mention where the face number is used and that it depends on the 'face' property of the face symbol. Improve indexing.
mentioned in commit 08bc407a
·mentioned in commit 08bc407a