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Manual: Add the %if tag to the manual. Closes bug FS#11555.

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@28097 a1c6a512-1295-4272-9138-f99709370657
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Alex Parker 2010-09-17 19:13:14 +00:00
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20
manual/appendix/wps_tags.tex
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@ -493,8 +493,28 @@ Example: \config{\%ax\%V(\dots)}
& If / Else: Evaluate for true or false case \\
\config{\%?xx<alt1|alt2|\tabnlindent{}alt3|\dots|else>}
& Enumerations: Evaluate for first / second / third / \dots / last condition \\
\config{\%if(tag, operator, operand, [option count])}
& Allows very simple comparisons with other tags.\newline
\config{tag}: the tag to check against.\newline
\config{operator}: the comparison to perform - possible options are =, !=,
>, >=, <, <=\newline
\config{operand}: either a second tag, a number, or text.\newline
\config{[option count]}: optional parameter used to select which parameter
of a tag to use when the tag has multiple options, e.g. \%?pv<a|b|c|d>\\
\end{tagmap}
Examples of the \%if tag:\\
\config{\%?if(\%pv, >=, 0)<Clipping possible|Volume OK>} will display ``Clipping
possible'' if the volume is higher than or equal to 0 dB, ``Volume OK'' if it
is lower.\\
\config{\%?if(\%ia, =, \%Ia)<same artist>} -- this artist and the next artist
are the same.\\
\note{When performing a comparison against a string tag such as \%ia, only = and
!= work, and the comparison is not case sensitive.}
\section{Subline Tags}
\begin{tagmap}