use-default-ascent

use-default-ascent is a variable defined in `C source code'.
Its value is

#^[nil nil use-default-ascent nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil]

Documentation:
Char table of characters whose ascent values should be ignored.
If an entry for a character is non-nil, the ascent value of the glyph
is assumed to be specified by _MULE_DEFAULT_ASCENT property of a font.

This affects how a composite character which contains
such a character is displayed on screen.