conditional processing
Conditional processing is used without switch and with systemLanguage on a set element.
The set enlarges the width of a red square.
The following alternative set element enlarges the height
of the same rectangle.
It is assumed, that a viewer does not support the required
systemLanguage, therefore the alternative set has to be used.
A blue comparison is provided on top of the red one,
if the red test rectangle gets visible, this indicates
an error.
The systemLanguage is something experimental 'x-xl'
by default.
Alternatively a string of an unsupported systemLanguage
can be given manually with the GET parameter 'lang'.
x-xl