The microtype package

IMPLEMENTATION: Package options 1203867 \MT@glet\MT@copy@font\relax3868 \fi3869 }3870 }{3871 3872 3873 \MT@def@bool@opt{copyfonts}{%3874 \csname if\@tempa\endcsname3875 \MT@error3876 {The pdftex version you are using is too old\MessageBreak3877 to use the `copyfonts’ option}{Upgrade pdftex.}%3878 {The `copyfonts’ option does not work with xetex}3879 {Use pdftex or luatex instead.}%3880 \fi3881 }3882 }3883 final is the opposite to draft.3884 3885 \MT@def@bool@opt{final}{%3886 \csname if\@tempa\endcsname3887 \MT@draftfalse3888 \else3889 \MT@drafttrue3890 \fi3891 }For verbose output, we redefine \MT@vinfo.3892 \define@key{MT}{verbose}[true]{%3893 \let\MT@vinfo\MT@info@nl3894 \def\@tempa{#1}%3895 \MT@ifstreq\@tempa{true}\relax{%Take problems seriously.3896 \MT@ifstreq\@tempa{errors}{%3897 \let\MT@warning \MT@warn@err3898 \let\MT@warning@nl\MT@warn@err3899 }{%3900 \let\MT@vinfo\@gobbleCast warnings to the winds.3901 \MT@ifstreq\@tempa{silent}{%3902 \let\MT@warning \MT@info3903 \let\MT@warning@nl\MT@info@nl3904 }{%3905 \MT@ifstreq\@tempa{false}\relax{\MT@optwarn@admissible{#1}{verbose}}%3906 }%3907 }%3908 }%3909 }3910 Options with numerical keys: factor, stretch, shrink, step, letterspace.3911 3912 \MT@requires@latex1{3913 \MT@map@clist@n{%3914 stretch,shrink,step,%3915 letterspace}{%3916 \define@key{MT}{#1}[\csname MT@#1@default\endcsname]{%3917 \def\@tempa{##1 }%No nonsense in \MT@factor et al.? A space terminates the number.3918 \MT@ifint\@tempa3919 {\MT@edef@n{MT@#1}{\@tempa}}%