Am 15.12.2012 um 00:07 schrieb Andre Caldas <andre.em.cal...@gmail.com>:
>> thanks for the interesting contribution! Have a look at the patch
>> I hopefully don’t forget to append.
>
> I didn't quite understood how this works:
> \unexpanded\def\startframe{\dosingleempty\frame_start}
This creates the new command \startframe which calls the internal command
\frame_start which has one optional argument.
> \def\frame_start[#1]{%
> \iffirstargument
> \section{#1}%% solution needed here!
> \fi
This block checks if the optional argument is used by the user, when the
argument is used the content is typeset as \section.
> \begingroup
> \grabbufferdata[simplesteps][startframe][stopframe]%
> }
With the \grabbufferdata command the content beginning from \startframe until
\stopframe is stored in a buffer with the name “simplesteps”.
> \let\stopframe\simplestepsplaybuffer
This makes the \stopframe command a synonym for \simplestepsplaybuffer which is
now called when the frame environment ends.
Wolfgang
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