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Joseph Wright committed 24853e6

Allow amssymb to be skipped (fixes issue #219)

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 \DeclareOptionBeamer{ignorenonframetext}{\beamer@ignorenonframetrue}
 
+\DeclareOptionBeamer{noamssymb}{\beamer@amssymbfalse}
+
 \def\beamer@size{{size11.clo}}
 \DeclareOptionBeamer{bigger}{\def\beamer@size{{size12.clo}}}
 \DeclareOptionBeamer{smaller}{\def\beamer@size{{size10.clo}}}

doc/beamerug-localstructure.tex

   Does not load |amsthm| and also not |amsmath|. Environments like |theorem| or |proof| will not be available.
 \end{classoption}
 
+\begin{classoption}{noamssymb}
+  Does not load |amssymb|. This option is mainly intended for users who are loading specialist font packages. Note that |\blacktriangleright| needs to be defined if |itemize| environments are in use.
+\end{classoption}
+
+
 \begin{element}{theorems}\semiyes\no\no
   This template is a parent of |theorem begin| and |theorem end|, see the first for a detailed discussion of how the theorem templates are set.