Hi,
I just added an explanation of "fullhz" to the options in
https://wiki.contextgarden.net/Command/setupalign.
but I’m actually unsure if it’s right.
In the sources I found:
https://source.contextgarden.net/tex/context/base/mkxl/hand-ini.mkxl
%D At some point we can introduce extreme expansion, i.e. \type
{\normaladjustspacing\plustwo}.
56
57% 0 = disabled
58% 1 = notused (thesis)
59% 2 = glyph + kern
60% 3 = glyph only (default)
61
62\def\font_expansion_enable {\normaladjustspacing\plusthree}
63\def\font_expansion_enable_k{\normaladjustspacing\plustwo}
64%def\font_expansion_enable_n{\normaladjustspacing\plusone}
65\def\font_expansion_disable {\normaladjustspacing\zerocount}
And "fullhz" in spac-ali.mkxl calls \font_expansion_enable_k.
So, apparently fullhz enables stretching of *kerning* – that sounds to
me like letterspacing.
OTOH in my notes (and thus in my book) I have the information that
fullhz enables stretching of *glue*, and I thought that would mean
whitespace outside of words.
Please enlighten me?
Hraban
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