[PATCH] [Xcos en_US help] Replacement of references to obsolete xset in TEXT_f.xml

[DUJARDIN Bernard]

Hello,

Summary of patch:

Replace obsolete xset reference by a linked reference to Graphics font
help file.
Add to description text :
Starting from Scilab 5.2, it is possible to write LaTeX or MathML
expression with a linked reference to Latex MathML scilab help file

-- 
Bernard DUJARDIN
Département GEII
IUT de Béthune