Property Masking
Property masking allows for the stripping away of unwanted text from the value of an object property.
doc.element[x].property[x-y]
Returns a range of characters from position x to y.
doc.element[x].property['mask']
Uses wildcard matching and token collecting to extract desired data from the value of an object property.
doc.element[x].property[/RegularExpression/]
Uses a regular expression to extract desired data from the value of an object property. For information about how to construct a regular expression, see
Regular Expressions.