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-%D \module
-%D   [       file=font-mat,
-%D        version=2011.01.13, % (copied fron font-ini)
-%D          title=\CONTEXT\ Font Macros,
-%D       subtitle=Math,
-%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 Font Macros / Math}
-
-\unprotect
-
-%D Be nice:
-
-\ifdefined\??fontinstanceready \else \installcorenamespace{fontinstanceready} \fi
-\ifdefined\??fontinstancebasic \else \installcorenamespace{fontinstancebasic} \fi
-\ifdefined\??fontinstanceclass \else \installcorenamespace{fontinstanceclass} \fi
-
-%D The order 3 2 1 of siuze matters: needed for math-fbk relative size storage!
-
-%D \macros
-%D   {textonly}
-%D
-%D Traditionally math has a big impact on font definitions, mainly because we need
-%D to define alphabet variants using families and fonts. This means that one can
-%D easily get 10 fonts loaded per math size. In \MKIV\ we use a different approach:
-%D one family which has either a virtual font made of traditional fonts, or an
-%D \OPENTYPE\ font that has it all.
-%D
-%D We currently use only one math family but in the future we might consider using a
-%D second one for bold math. For the moment we keep the \MKII\ method of using a
-%D token register for definitions but we already dropped the text and symbols ones
-%D since they now live in the same family.
-
-\newtoks       \t_font_math_strategies
-\newconditional\c_font_synchronize_math_fonts \settrue\c_font_synchronize_math_fonts
-
-\protected\def\font_helpers_synchronize_math % math stuff in mmode
-  {\ifconditional\c_font_synchronize_math_fonts\the\t_font_math_strategies\fi}
-
-\permanent\protected\def\textonly{\setfalse\c_font_synchronize_math_fonts} % document this
-
-%D The main math font definer. We have removed some optimized code simply because we
-%D now always have a fontclass. We could check for fontclass being default or empty
-%D and save a few tests but it does not help us when no math is defined.
-%D
-%D Because we want to keep mr=.. and mb=... settings (read: not break downward
-%D compatibility by enforcing mrlr etc) we need a bit more code that optimal.
-
-% todo: \c_font_fam_mr
-
-\let\c_font_fam_mr   \zerocount  % math regular
-\let\c_font_fam_mr_lr\plusone    % math regular l2r
-\let\c_font_fam_mr_rl\plustwo    % math regular r2l
-
-\let\c_font_fam_mb   \plusthree  % math bold
-\let\c_font_fam_mb_lr\plusfour   % math bold l2r
-\let\c_font_fam_mb_rl\plusfive   % math bold r2l
-
-\definesystemattribute[mathfamily][public]
-
-\newconditional\c_font_bidirectional_mathstrategy  % can be default, not that much overhead: \settrue\c_font_bidirectional_mathstrategy
-\newconditional\c_font_complete_bold_mathstrategy  \settrue\c_font_complete_bold_mathstrategy
-
-% \frozen ...
-
-\def\mathtextsuffix        {-text}
-\def\mathscriptsuffix      {-script}
-\def\mathscriptscriptsuffix{-scriptscript}
-
-\def\mathsizesuffix{\ifcase\fontface\or\mathtextsuffix\or\mathscriptsuffix\or\mathscriptscriptsuffix\fi}
-
-%D Beware: truefontname also does a fallback on defaultfontclass so there
-%D can be some interference here, which is why we use a different method
-%D for bold.
-
-\def\font_helpers_set_math_family_a
-  {\ifcsname\??fontinstanceready\fontclass       -\fontbody-\s!mm-\fontfamily-\fontsize\endcsname \setfalse\c_font_auto_size
-     \lastnamedcs \orelse
-   \ifcsname\??fontinstanceready\fontclass       -\fontbody-\s!mm-\fontfamily          \endcsname \settrue \c_font_auto_size
-     \lastnamedcs \else
-     \font_helpers_set_math_family_b
-   \fi}
-
-\def\font_helpers_set_math_family_b
-  {\ifcsname\??fontinstanceready\defaultfontclass-\fontbody-\s!mm-\fontfamily-\fontsize\endcsname \setfalse\c_font_auto_size
-     \lastnamedcs \orelse
-   \ifcsname\??fontinstanceready\defaultfontclass-\fontbody-\s!mm-\fontfamily          \endcsname \settrue \c_font_auto_size
-     \lastnamedcs \else
-     \font_helpers_set_math_family_c
-   \fi}
-
-\def\font_helpers_set_math_family_c
-  {\ifcsname\??fontinstanceready                  \fontbody-\s!mm-\fontfamily-\fontsize\endcsname \setfalse\c_font_auto_size
-     \lastnamedcs \orelse
-   \ifcsname\??fontinstanceready                  \fontbody-\s!mm-\fontfamily          \endcsname \settrue \c_font_auto_size
-     \lastnamedcs \else
-                                                                                                  \settrue \c_font_auto_size
-   \fi}
-
-\let\mathsizesuffix\empty
-
-\def\font_helpers_set_math_family_indeed#mrtag#family% \fontface etc are also used later on
-  {\let\savedfontbody\fontbody
-   \let\fontfamily#family%
-   % the order is important as we depend on known id's when completing fonts
-   % enabling is needed when we have fallbacks which spoils the families
-   \let\mathsizesuffix\mathscriptscriptsuffix\let\fontface\!!plusthree
-   \font_helpers_set_math_family_a\scriptscriptfont#mrtag\font % defines
-   \font_helpers_set_math_family_a\scriptscriptfont#mrtag\font % enables
-   \let\mathsizesuffix\mathscriptsuffix      \let\fontface\!!plustwo
-   \font_helpers_set_math_family_a\scriptfont      #mrtag\font % defines
-   \font_helpers_set_math_family_a\scriptfont      #mrtag\font % enables
-   \let\mathsizesuffix\mathtextsuffix        \let\fontface\!!plusone
-   \font_helpers_set_math_family_a\textfont        #mrtag\font % defines
-   \font_helpers_set_math_family_a\textfont        #mrtag\font % enables
-   \let\mathsizesuffix\empty                 \let\fontface\!!zerocount
-   \let\fontbody\savedfontbody
-   \setfalse\c_font_auto_size}
-
-\def\font_helpers_set_math_family_bold_a#font#mbfam#mrfam%
-  {\ifcsname\??fontinstanceready\fontclass-\fontbody-\s!mm-\fontfamily-\fontsize\endcsname \setfalse\c_font_auto_size
-     \lastnamedcs #font#mbfam\font \orelse
-   \ifcsname\??fontinstanceready\fontclass-\fontbody-\s!mm-\fontfamily          \endcsname \settrue \c_font_auto_size
-     \lastnamedcs #font#mbfam\font \else
-     #font#mbfam#font#mrfam%
-   \fi}
-
-\def\font_helpers_set_math_family_bold_indeed#mbfam#familytag#mrfam% \c_font_fam_mb \s!mb \c_font_fam_mr
-  {\let\savedfontclass\defaultfontclass
-   \let\defaultfontclass\fontclass % else truefontname falls back on the wrong one
-   \let\savedfontbody\fontbody
-   \let\fontfamily#familytag%
-   \let\mathsizesuffix\mathscriptscriptsuffix\let\fontface\!!plusthree
-   \font_helpers_set_math_family_bold_a\scriptscriptfont#mbfam#mrfam% defines
-   \font_helpers_set_math_family_bold_a\scriptscriptfont#mbfam#mrfam% enables
-   \let\mathsizesuffix\mathscriptsuffix      \let\fontface\!!plustwo
-   \font_helpers_set_math_family_bold_a\scriptfont      #mbfam#mrfam% defines
-   \font_helpers_set_math_family_bold_a\scriptfont      #mbfam#mrfam% enables
-   \let\mathsizesuffix\mathtextsuffix        \let\fontface\!!plusone
-   \font_helpers_set_math_family_bold_a\textfont        #mbfam#mrfam% defines
-   \font_helpers_set_math_family_bold_a\textfont        #mbfam#mrfam% enables
-   \let\mathsizesuffix\empty                 \let\fontface\!!zerocount
-   \let\fontbody\savedfontbody
-   \let\defaultfontclass\savedfontclass
-   \setfalse\c_font_auto_size}
-
-% optimized: math fonts are never changed (10K \bfa $x$: 3.2 => 2.5 (baseline 1.0))
-%
-% sort of tricky: we cannot reset in \everybeforedefinetypeface as we don't know
-% all sizes so we postpone the optimization to the first starttext
-%
-% pitfall: we should reset 'm when a fontclass name is reused
-
-\newconditional\optimizemathfontdefinitions \settrue\optimizemathfontdefinitions
-
-\def\font_helpers_set_math_family#mrfam#familytag%
-  {\ifconditional\optimizemathfontdefinitions
-     \ifcsname\??fontinstanceclass\fontclass-\fontbody-\s!mm-#familytag-\fontsize-1\endcsname
-       % \writestatus{fonts}{math: reusing \fontclass\fontbody\s!mm#familytag\fontsize1}%
-       \font_helpers_preset_math_family_indeed#mrfam#familytag%
-     \else
-       % \writestatus{fonts}{math: defining \fontclass\fontbody\s!mm#familytag\fontsize1}%
-       \font_helpers_set_math_family_indeed#mrfam#familytag%
-     \fi
-   \else
-     \font_helpers_set_math_family_indeed#mrfam#familytag%
-   \fi}
-
-\def\font_helpers_set_math_family_bold#mbfam#familytag#mrfam%
-  {\ifconditional\optimizemathfontdefinitions
-    %\ifcsname\??fontinstanceclass\fontclass-\textface-\s!mm-#familytag-\fontsize-1\endcsname
-     \ifcsname\??fontinstanceclass\fontclass-\fontbody-\s!mm-#familytag-\fontsize-1\endcsname
-       \font_helpers_preset_math_family_indeed#mbfam#familytag%
-     \else
-       \font_helpers_set_math_family_bold_indeed#mbfam#familytag#mrfam%
-     \fi
-   \else
-     \font_helpers_set_math_family_bold_indeed#mbfam#familytag#mrfam%
-   \fi}
-
-%D It can happen that we use a bodyfont with no math in which case we have a problem
-%D with setting the global bodyfont size in the page builder. For instance in:
-%D
-%D \starttext
-%D     \definetypeface[test][rm][serif][pagella][default]
-%D     \setupbodyfont[test]
-%D     test
-%D \stoptext
-%D
-%D This is why we need the check. At the cost of some extra checking we gain a
-%D little in restoring global states and, what's more important, we get rid of large
-%D math parameter push/pop in tracingall when not needed.
-
-\def\font_helpers_preset_math_family_indeed#fam#familytag%
-  {\expandafter\let\expandafter\v_font_math_one\csname\??fontinstanceclass\fontclass-\fontbody-\s!mm-#familytag-\fontsize-1\endcsname
-   \ifx\v_font_math_one\relax
-     \font_helpers_preset_math_family_warning
-   \orelse\ifnum\fontid\textfont#fam=\fontid\v_font_math_one\else
-     \font_helpers_preset_math_family_indeed_changed#fam#familytag%
-   \fi}
-
-\def\font_helpers_preset_math_family_warning
-  {\writestatus{fonts}{math: unset for global bodyfont \fontclass\space at \fontbody}}
-
-\def\font_helpers_preset_math_family_indeed_changed#fam#familytag%
-  {\scriptscriptfont#fam\csname\??fontinstanceclass\fontclass-\fontbody-\s!mm-#familytag-\fontsize-3\endcsname
-   \scriptfont      #fam\csname\??fontinstanceclass\fontclass-\fontbody-\s!mm-#familytag-\fontsize-2\endcsname
-   \textfont        #fam\v_font_math_one}
-
-\let\font_helpers_reset_fontclass_math_families\gobbleoneargument
-
-%D It would be nice if characters could be defined in a neutral way (say fam 255)
-%D and be mapped to a real family during noad list construction. However, this
-%D changes tex in critical places so for the moment we simulate this using
-%D manipulation.
-%D
-%D For tracing purposes we use three families but in l2r mode 1 and 2 are copies of
-%D 0 while in rl mode 0 is a copy of 1. There is no real overhead involved in this.
-%D This also permits different font definitions for normal and mixed.
-
-\let\m_font_class_direction\empty
-\let\m_font_class_features \empty
-\let\m_font_class_fallbacks\empty
-\let\m_font_class_goodies  \empty
-
-\let\m_font_direction\empty
-\let\m_font_features \empty
-\let\m_font_fallbacks\empty
-\let\m_font_goodies  \empty
-
-\appendtoks % can be analyzed once
-    % why here ..
-   %\edef\m_font_class_direction{\ifcsname\??fontclass\fontclass\s!mm\s!direction\endcsname\csname\??fontclass\fontclass\s!mm\s!direction\endcsname\fi}%
-    \edef\m_font_class_direction{\begincsname\??fontclass\fontclass\s!mm\s!direction\endcsname}%
-    % ...
-    \ifx\m_font_class_direction\v!both
-      \settrue\c_font_bidirectional_mathstrategy
-    \else
-      \setfalse\c_font_bidirectional_mathstrategy
-    \fi
-\to \t_font_math_strategies
-
-\def\font_helpers_bidirectional_mathstrategy_yes
-  {\font_helpers_set_math_family\c_font_fam_mr_lr\s!mrlr
-   \font_helpers_set_math_family\c_font_fam_mr_rl\s!mrrl
-   \ifnum\fontid\textfont\c_font_fam_mr=\fontid\textfont\c_font_fam_mr_lr\else
-     \font_helpers_bidirectional_mathstrategy_yes_changed
-   \fi}
-
-\def\font_helpers_bidirectional_mathstrategy_yes_changed
-  {\textfont        \c_font_fam_mr\textfont        \c_font_fam_mr_lr
-   \scriptfont      \c_font_fam_mr\scriptfont      \c_font_fam_mr_lr
-   \scriptscriptfont\c_font_fam_mr\scriptscriptfont\c_font_fam_mr_lr}
-
-\def\font_helpers_bidirectional_mathstrategy_nop
-  {\font_helpers_set_math_family\c_font_fam_mr\s!mr
-   \ifnum\fontid\textfont\c_font_fam_mr_rl=\fontid\textfont\c_font_fam_mr\else
-     \font_helpers_bidirectional_mathstrategy_nop_changed
-   \fi}
-
-\def\font_helpers_bidirectional_mathstrategy_nop_changed
-  {\textfont        \c_font_fam_mr_lr\textfont        \c_font_fam_mr
-   \scriptfont      \c_font_fam_mr_lr\scriptfont      \c_font_fam_mr
-   \scriptscriptfont\c_font_fam_mr_lr\scriptscriptfont\c_font_fam_mr
-   \textfont        \c_font_fam_mr_rl\textfont        \c_font_fam_mr
-   \scriptfont      \c_font_fam_mr_rl\scriptfont      \c_font_fam_mr
-   \scriptscriptfont\c_font_fam_mr_rl\scriptscriptfont\c_font_fam_mr}
-
-\appendtoks
-    \ifconditional\c_font_bidirectional_mathstrategy
-      \font_helpers_bidirectional_mathstrategy_yes
-    \else
-      \font_helpers_bidirectional_mathstrategy_nop
-    \fi
-\to \t_font_math_strategies
-
-\def\font_helpers_complete_bold_mathstrategy_yes_bidi
-  {\font_helpers_set_math_family_bold\c_font_fam_mb_lr\s!mblr\c_font_fam_mr_lr
-   \font_helpers_set_math_family_bold\c_font_fam_mb_rl\s!mbrl\c_font_fam_mr_rl
-   \ifnum\fontid\textfont\c_font_fam_mb=\fontid\textfont\c_font_fam_mb_lr\else
-     \font_helpers_complete_bold_mathstrategy_yes_bidi_changed
-   \fi}
-
-\def\font_helpers_complete_bold_mathstrategy_yes_bidi_changed
-  {\textfont        \c_font_fam_mb\textfont        \c_font_fam_mb_lr
-   \scriptfont      \c_font_fam_mb\scriptfont      \c_font_fam_mb_lr
-   \scriptscriptfont\c_font_fam_mb\scriptscriptfont\c_font_fam_mb_lr}
-
-\def\font_helpers_complete_bold_mathstrategy_yes
-  {\font_helpers_set_math_family_bold\c_font_fam_mb\s!mb\c_font_fam_mr\relax
-   \ifnum\fontid\textfont\c_font_fam_mb_rl=\fontid\textfont\c_font_fam_mb\else
-     \font_helpers_complete_bold_mathstrategy_yes_changed
-   \fi}
-
-\def\font_helpers_complete_bold_mathstrategy_yes_changed
-  {\textfont        \c_font_fam_mb_rl\textfont        \c_font_fam_mb
-   \scriptfont      \c_font_fam_mb_rl\scriptfont      \c_font_fam_mb
-   \scriptscriptfont\c_font_fam_mb_rl\scriptscriptfont\c_font_fam_mb
-   \textfont        \c_font_fam_mb_lr\textfont        \c_font_fam_mb
-   \scriptfont      \c_font_fam_mb_lr\scriptfont      \c_font_fam_mb
-   \scriptscriptfont\c_font_fam_mb_lr\scriptscriptfont\c_font_fam_mb}
-
-\def\font_helpers_complete_bold_mathstrategy_nop
-  {\ifnum\fontid\textfont\c_font_fam_mb=\fontid\textfont\c_font_fam_mr\else
-     \font_helpers_complete_bold_mathstrategy_nop_changed
-   \fi}
-
-\def\font_helpers_complete_bold_mathstrategy_nop_changed
-  {\textfont        \c_font_fam_mb   \textfont        \c_font_fam_mr
-   \scriptfont      \c_font_fam_mb   \scriptfont      \c_font_fam_mr
-   \scriptscriptfont\c_font_fam_mb   \scriptscriptfont\c_font_fam_mr
-   \textfont        \c_font_fam_mb_lr\textfont        \c_font_fam_mr_lr
-   \scriptfont      \c_font_fam_mb_lr\scriptfont      \c_font_fam_mr_lr
-   \scriptscriptfont\c_font_fam_mb_lr\scriptscriptfont\c_font_fam_mr_lr
-   \textfont        \c_font_fam_mb_rl\textfont        \c_font_fam_mr_rl
-   \scriptfont      \c_font_fam_mb_rl\scriptfont      \c_font_fam_mr_rl
-   \scriptscriptfont\c_font_fam_mb_rl\scriptscriptfont\c_font_fam_mr_rl}
-
-\def\font_helpers_apply_complete_bold_mathstrategy
-  {\ifconditional\c_font_complete_bold_mathstrategy
-     \ifconditional\c_font_bidirectional_mathstrategy
-       \font_helpers_complete_bold_mathstrategy_yes_bidi
-     \else
-       \font_helpers_complete_bold_mathstrategy_yes
-     \fi
-   \else
-     \font_helpers_complete_bold_mathstrategy_nop
-   \fi}
-
-\appendtoks
-    \font_helpers_apply_complete_bold_mathstrategy
-\to \t_font_math_strategies
-
-\ifdefined\defaultmathfamily \else
-    \setnewconstant\defaultmathfamily\zerocount
-\fi
-
-\appendtoks
-    \fam\defaultmathfamily % all characters and symbols are in this family
-\to \everymathematics
-
-\protected\def\font_helpers_synchronize_math_family_mr
-  {\c_attr_mathfamily\ifconditional\c_font_bidirectional_mathstrategy
-     \ifconditional\c_math_right_to_left
-       \plustwo
-     \else
-       \plusone
-     \fi
-   \else
-     \zerocount
-   \fi}
-
-\protected\def\font_helpers_synchronize_math_family_mb
-  {\c_attr_mathfamily\ifconditional\c_font_bidirectional_mathstrategy
-     \ifconditional\c_math_right_to_left
-       \ifconditional\c_font_pseudo_bold_math_state\pluseight\else\plusfive\fi
-     \else
-       \ifconditional\c_font_pseudo_bold_math_state\plusseven\else\plusfour\fi
-     \fi
-   \else
-     \ifconditional\c_font_pseudo_bold_math_state\plussix\else\plusthree\fi
-   \fi}
-
-\installcorenamespace{fontmathsynchronizer}
-\installcorenamespace{fontmathstoredstrategy}
-
-\letvalue{\??fontmathsynchronizer\s!tf }\font_helpers_synchronize_math_family_mr
-\letvalue{\??fontmathsynchronizer\s!sl }\font_helpers_synchronize_math_family_mr
-\letvalue{\??fontmathsynchronizer\s!it }\font_helpers_synchronize_math_family_mr
-\letvalue{\??fontmathsynchronizer\s!bf }\font_helpers_synchronize_math_family_mb
-\letvalue{\??fontmathsynchronizer\s!bs }\font_helpers_synchronize_math_family_mb
-\letvalue{\??fontmathsynchronizer\s!bi }\font_helpers_synchronize_math_family_mb
-\letvalue{\??fontmathsynchronizer\empty}\font_helpers_synchronize_math_family_mr
-
-% \def\font_helpers_synchronize_math_family
-%   {\csname\??fontmathsynchronizer\ifcsname\??fontmathsynchronizer\fontalternative\endcsname\fontalternative\fi\endcsname}
-
-\def\font_helpers_synchronize_math_family
-  {\ifcsname\??fontmathsynchronizer\fontalternative\endcsname
-     \lastnamedcs
-   \else
-     \font_helpers_synchronize_math_family_mr
-   \fi}
-
-\appendtoks
-    \ifnum\fontid\textfont\zerocount=\fontid\textfont\plusthree
-        \letvalue{\??fontmathstoredstrategy\fontclass}\font_helpers_set_math_partial_bold_strategy
-    \else
-        \letvalue{\??fontmathstoredstrategy\fontclass}\font_helpers_set_math_full_bold_strategy
-    \fi
-\to \t_font_math_strategies
-
-%def\font_helpers_synchronize_math_bold_strategy{\csname\??fontmathstoredstrategy\fontclass\endcsname}
-\def\font_helpers_synchronize_math_bold_strategy{\begincsname\??fontmathstoredstrategy\fontclass\endcsname}
-
-\newconditional\c_font_pseudo_bold_math_state
-
-\def\font_helpers_set_math_partial_bold_strategy{\settrue \c_font_pseudo_bold_math_state}
-\def\font_helpers_set_math_full_bold_strategy   {\setfalse\c_font_pseudo_bold_math_state}
-
-\appendtoks
-    \font_helpers_synchronize_math_bold_strategy
-\to \everymathematics
-
-%D Bold is somewhat special as we might want both full-bold-math mixed regular-math,
-%D as well as automatic adaption to outer bold (in titles and inline text bold) so
-%D we will need explicit switches as well as an automatic one. (We will use lucida
-%D as an example.)
-
-\ifdefined\mathdefault \else \let\mathdefault\relax \fi
-
-\newconditional\c_math_bold
-
-\protected\def\mr % math regular
-  {\ifmmode
-     \font_helpers_synchronize_math_family_mr
-   \else
-     \font_helpers_set_current_font_alternative\s!mr
-   \fi
-   \mathdefault
-   \setfalse\c_math_bold}
-
-\protected\def\mb % math bold
-  {\ifmmode
-     \font_helpers_synchronize_math_family_mb
-   \else
-     \font_helpers_set_current_font_alternative\s!mb
-   \fi
-   \mathdefault
-   \settrue\c_math_bold}
-
-\appendtoks
-    \font_helpers_synchronize_math_family % auto bold
-\to \everymathematics
-
-\appendtoks
-    \ifconditional\c_math_bold\mb\fi
-\to \everymathematics
-
-%D \macros
-%D   {bigmath,nobigmath}
-%D
-%D We can inhibit this slow||downer with:
-
-% these can best be combined
-
-% 0=never 1=everymath 2=always
-
-\setnewconstant\synchronizebigmathflag\plusone
-
-\appendtoks
-  \ifcase\synchronizebigmathflag
-    % never
-  \or
-    \synchronizebigmath
-  \or
-    % always
-  \fi
-\to \everymathematics
-
-\protected\def\nobigmath  {\synchronizebigmathflag\zerocount}
-\protected\def\autobigmath{\synchronizebigmathflag\plusone\synchronizebigmath}
-\protected\def\bigmath    {\synchronizebigmathflag\plustwo\synchronizebigmath}
-
-\let\bigmathfontsize\empty
-
-\protected\def\synchronizebigmath
-  {\ifx\bigmathfontsize\fontsize
-     % already in sync
-   \else
-     \let\bigmathfontsize\fontsize
-     \font_helpers_synchronize_math
-   \fi}
-
-\protected\def\font_helpers_check_big_math_synchronization
-  {\ifcase\synchronizebigmathflag
-     % never
-   \or
-     \ifmmode \synchronizebigmath \fi
-   \or
-     \synchronizebigmath
-   \fi}
-
-\protect \endinput