Improve diagnostic messages. Improve searching for help docs. Better identation.
Improve diagnostic messages.
Improve searching for help docs.
Better identation.

svn path=/trunk/; revision=4612

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