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%D \module
%D [ file=typo-fkr,
%D version=2016.10.10,
%D title=\CONTEXT\ Typesetting Macros,
%D subtitle=Additional Font Kerning,
%D author=Hans Hagen,
%D date=\currentdate,
%D copyright={PRAGMA ADE \& \CONTEXT\ Development Team}]
%C
%C This module is part of the \CONTEXT\ macro||package and is
%C therefore copyrighted by \PRAGMA. See mreadme.pdf for
%C details.
\writestatus{loading}{ConTeXt Typesetting Macros / Additional Font Kerning}
\registerctxluafile{typo-fkr}{}
\definesystemattribute[extrafontkern][public]
\unprotect
% none : not across fonts (but still within)
% min : min value across fonts
% max : max value across fonts
% mixed : mean value across fonts
% reset : disable
\permanent\protected\def\setextrafontkerns[#1]% % can be public implementor
{\clf_setextrafontkerns{#1}}
\permanent\protected\def\resetextrafontkerns
{\c_attr_extrafontkern\attributeunsetvalue}
\appendtoks
\resetextrafontkerns
\to \everyresettypesetting
\protect
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