[tclwebtest] Another command example.

[Grzegorz A. H. <gr...@ef...>]

I've commited this patch too, which shows a sometimes more convenient
assert command.

-- 
 Grzegorz Adam Hankiewicz, gr...@ef.... Tel: +34-94-472 35 89.
 eFaber SL, Maria Diaz de Haro, 68, 2         http://www.efaber.net/
 48920 Portugalete, Bizkaia (SPAIN)