Hagen - Pragma ADE

[default]
[itlc=5]
This is demonstrated in figure 8.5. You will notice that for Latin Modern (any) correction
makes sense, but for Dejavu it probably makes things look worse. This is why
italic correction is disabled by default. When enabled there are several variants:
global always apply correction
text only apply correction to text
always apply correction between text and boxes
none forget about correction
We keep track of the state using attributes but that comes at a (small) price in terms
of extra memory and runtime. The global option simply assumes that we always need
to check for correction (of course only for fonts that have this feature enables). In the
given example we used:
\setupitaliccorrection
[text]
You can combine keys:
\setupitaliccorrection
[global,always]
test test test test
test test test test
Figure 8.5 Italic correction (factor 5).
The itlc feature controls if a font gets italic correction applied. In principle this is all
that the user needs to do, given that the mechanism is enabled. These is an extra feature
that controls the implementation:
itlc no don’t apply italic correction (default)
yes apply italic correction
textitalics no precalculate italic corrections (permit engine usage)
yes precalculate italic corrections (inhibit engine)
delay delay calculation of corrections
When textitalics is set to yes or delay the mechanism built into the engine is
completely disabled. When set to no the engine can kick in but normally the alternative
method takes precedence so that the engine sees no reason for further action. You can
trace italic corrections with:
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Extensions