void HTML_Template_Sigma::setGlobalVariable (mixed $variable [, string $value = ''])
void HTML_Template_Sigma::setGlobalVariable
Sets a global variable value. Global variables are "special": they do not get cleared after substitution and do not make blocks not empty if substituted.
variable name or array ('varname'=>'value')
variable value if $variable is not an array
throws no exceptions thrown
see HTML_Template_Sigma::setVariable()
This function can not be called statically.
