Tweak.  plsdev ==> plssub which is the correct cross-reference from the context.
Tweak.  plsdev ==> plssub which is the correct cross-reference from the
context.

svn path=/trunk/; revision=4830

FreeScienceCommunity/PLPlot,FreeScienceCommunity/PLPlot,FreeScienceCommunity/PLPlot,FreeScienceCommunity/PLPlot,FreeScienceCommunity/PLPlot,FreeScienceCommunity/PLPlot,FreeScienceCommunity/PLPlot,FreeScienceCommunity/PLPlot,FreeScienceCommunity/PLPlot