The microtype package

IMPLEMENTATION: Configuration 98\MT@pr@context\MT@ex@context\MT@tr@context\MT@sp@context\MT@kn@context\MT@pr@doc@contexts\MT@ex@doc@contexts\MT@tr@doc@contexts\MT@sp@doc@contexts\MT@kn@doc@contexts\DeclareMicrotypeSet\MT@extra@context\DeclareMicrotypeSet*\MT@DeclareSet2822 \ifMT@inlist@Using an empty context is only asking for trouble, therefore we choose the ‘@’instead (hoping for the L A TEX users’ natural awe of this character).2823 \MT@ifempty{##1}{\def\MT@val{@}}{\def\MT@val{##1}}%2824 \MT@exp@cs\ifx{MT@\@tempb @context}\MT@val2825 \MT@dinfo{1}{>>> no change of #1 context: `\MT@val’}%2826 \else2827 \MT@vinfo{>>> Changing #1 context to `\MT@val’\MessageBreak\on@line2828 \space(previous: `\@nameuse{MT@\@tempb @context}’)%2829 }%2830 \def\MT@reset@context{\aftergroup\MT@reset@context@}%The next time we see the font, we have to reset all factors.2831 \MT@glet@nn{MT@reset@\@tempb @codes}{MT@reset@\@tempb @codes@}%We must also keep track of all contexts in the document.2832 \expandafter\MT@exp@one@n\expandafter\MT@in@tlist\expandafter2833 \MT@val \csname MT@\@tempb @doc@contexts\endcsname2834 \ifMT@inlist@ \else2835 \MT@exp@cs\MT@xadd{MT@\@tempb @doc@contexts}{{\MT@val}}%2836 \MT@dinfo{1}{||| added #1 context: \@nameuse{MT@\@tempb @doc@contexts}}%2837 \fi2838 \MT@edef@n{MT@\@tempb @context}{\MT@val}%2839 \fi2840 \fi2841 }%2842 }Initialise the contexts.2843 \MT@exp@one@n\MT@map@clist@n{\MT@features,nl}{%2844 \MT@def@n{MT@#1@context}{@}%2845 \MT@def@n{MT@#1@doc@contexts}{{@}}%2846 }2847 \let\MT@extra@context\@empty14.3 Configuration14.3.1 Font setsCalling this macro will create a comma list for every font attribute of the form:\MT〈feature〉list@〈attribute〉@〈set name〉. If the optional argument is empty, lists forall available features will be created.The third argument must be a list of key=value pairs. If a font attribute is notspecified, we define the corresponding list to \relax, so that it does not constitutea constraint.2848 \def\DeclareMicrotypeSet{%2849 \@ifstar2850 \MT@DeclareSetAndUseIt2851 \MT@DeclareSet2852 }2853 \newcommand\MT@DeclareSet[3][]{%2854 \KV@@sp@def\@tempa{#1}%2855 \MT@ifempty\@tempa{%2856 \MT@map@clist@c\MT@features{{\MT@declare@sets{##1}{#2}{#3}}}%2857 }{%2858 \MT@map@clist@c\@tempa{{%2859 \KV@@sp@def\@tempa{##1}%2860 \MT@ifempty\@tempa\relax{%2861 \MT@is@feature{set declaration `#2’}{%