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<TITLE>Begin/End Blocks</TITLE>
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<UL CLASS="ChildLinks">
<LI><A ID="tex2html734"
HREF="node31.html#SECTION003110000000000000000">Begin</A>
<LI><A ID="tex2html735"
HREF="node31.html#SECTION003120000000000000000">End</A>
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<H1><A ID="SECTION003100000000000000000"></A>
<A ID="sec-blocks"></A>
<BR>
Begin/End Blocks
</H1>
<P>
Entering a series of directives for a specific track can get quite
tedious. To make the creation of library files a bit easier, you can
create a block. For example, the following:
<P>
<Table Hspace="40%" CellSpacing=0 CellPadding=10 BGColor="OldLace" Border=3>
<tr><td>
<B>Drum Define X 0 2 100; 50 2 90
<BR>
Drum Define Y 0 2 100
<BR>
Drum Sequence X Y </B>
</td></tr>
</Table>
<P>
Can be replaced with:
<P>
<Table Hspace="40%" CellSpacing=0 CellPadding=10 BGColor="OldLace" Border=3>
<tr><td>
<B>Drum Begin
<BR> Define X 0 2 100; 50 2 90
<BR> Define Y 0 2 100
<BR>
End
<BR>
Drum Sequence X Y </B>
</td></tr>
</Table>
<P>
Or, even more simply, with:
<P>
<Table Hspace="40%" CellSpacing=0 CellPadding=10 BGColor="OldLace" Border=3>
<tr><td>
<B>Begin Drum Define
<BR> X 0 2 100; 50 2 90
<BR> Y 0 2 100
<BR>
End </B>
</td></tr>
</Table>
<P>
If you examine some of the library files you will see that this
shortcut is used a lot.
<P>
<H1><A ID="SECTION003110000000000000000">
Begin</A>
</H1>
<P>
The B<SMALL>EGIN</SMALL> command requires any number of arguments. Valid
examples include:
<P>
<Table Hspace="40%" CellSpacing=0 CellPadding=10 BGColor="OldLace" Border=3>
<tr><td>
<B>Begin Drum
<BR>
Begin Chord2
<BR>
Begin Walk Define </B>
</td></tr>
</Table>
<P>
Once a B<SMALL>EGIN</SMALL> block has been entered, all subsequent lines have
the words from the B<SMALL>EGIN</SMALL> command prepended to each line of
data. There is not much magic here—B<SMALL>EGIN</SMALL>/E<SMALL>ND</SMALL> is really
just some syntactic sugar.
<P>
<H1><A ID="SECTION003120000000000000000">
End</A>
</H1>
<P>
To finish off a B<SMALL>EGIN</SMALL> block, use a single E<SMALL>ND</SMALL> on a line
by itself.
<P>
Defining musical data or repeats inside a block
(other than COMMENT blocks) will not work.
<P>
Nesting is permitted, e.g.,
<P>
<Table Hspace="40%" CellSpacing=0 CellPadding=10 BGColor="OldLace" Border=3>
<tr><td>
<B>Scale Begin
<BR> Begin Define
<BR> </B><SPAN CLASS="textit">stuff</SPAN><B>
<BR> End
<BR> Sequence </B><SPAN CLASS="textit">stuff</SPAN><B>
<BR>
End </B>
</td></tr>
</Table>
<P>
A B<SMALL>EGIN</SMALL> must be competed with a E<SMALL>ND</SMALL> before the end of a
file, otherwise an error will be generated. The U<SMALL>SE</SMALL> and
I<SMALL>NCLUDE</SMALL> commands are not permitted inside a block.
<P>
Caution:
<UL>
<LI>Be careful when using user defined plugins inside a
block. If you were to do something like:
<P>
<Table Hspace="40%" CellSpacing=0 CellPadding=10 BGColor="OldLace" Border=3>
<tr><td>
<B>Begin @myplugin
<BR> some args
<BR>
End </B>
</td></tr>
</Table>
<P>
and the plugin returns strings back into your source file, you will
end up forever loop. The plugin is returning a data line back and
<FONT Face="Serif" Color="Navy"><I>MMA</I></FONT> will insert “@myplugin” to the new line. However, the block:
<P>
<Table Hspace="40%" CellSpacing=0 CellPadding=10 BGColor="OldLace" Border=3>
<tr><td>
<B>Begin
<BR> @myplugin ...
<BR>
End </B>
</td></tr>
</Table>
<P>
should work fine.
</LI>
</UL>
<P>
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