Hi!
In the calculation of internal leading and baseline-to-baseline distance below (in your glyph convention document), shouldn't it be 'ascent + descent' instead of 'ascent - descent'.
the linegap
the distance that must be placed between two lines of text. The baseline-to-baseline
distance should be computed as:
ascent - descent + linegap
if you use the typographic values.
the internal leading
this concept comes directly from the world of traditional typography. It represents
the amount of space within the "leading" which is reserved for glyph features that lay
outside of the EM square (like accentuation). It usually can be computed as:
internal leading = ascent - descent - EM_size
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Regards,
Meenakshi Saraswat