replace() can be used to reformat string values of attributes which consist of multiple elements, such as
red,green,blue,white. The function identifies a separator (e.g., a comma) and replaces it with a different separator (e.g., a white space). Going by example, the string value
red,green,blue,white would be turned into
red green blue white, with the comma replaced by a white space.
replace(<string variable>, <pattern>, <replacement>)
<pattern> may be a regular expression to find multiple separators (e.g., comma and semicolon) and complex separators (e.g., ---) at once.
The following example replaces a comma by a white space when printing the values of the string variable
<ISPRINT value="#replace(foo, ',', ' ')#">
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