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+%D \module
+%D [ file=attr-neg,
+%D version=2007.06.06,
+%D title=\CONTEXT\ Attribute Macros,
+%D subtitle=Negation,
+%D author=Hans Hagen,
+%D date=\currentdate,
+%D copyright=PRAGMA-ADE]
+%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 Attribute Macros / Negation}
+
+\registerctxluafile{attr-neg}{1.001}
+
+\unprotect
+
+% positive and negative are preregistered
+
+\def\dotriggernegative#1{\ctxcommand{triggernegative('#1'))}}
+
+\unexpanded\def\startnegative{\dotriggernegative\v!negative}
+\unexpanded\def\stopnegative {\dotriggernegative\v!positive}
+
+\unexpanded\def\startpositive{\dotriggernegative\v!positive}
+\unexpanded\def\stoppositive {\dotriggernegative\v!negative}
+
+\protect \endinput