getLogical

>>-getLogical(name-+----------+-)------------------------------><
                   +-,default-+

Returns the value of [name] as either .true or .false. The raw value of the [name] may be either the numeric values "0" or "1" or the string values "true" or "false". Any other value will raise a syntax error. If the property [name] does not exist and [default] has been specified, the default value will be returned. If [default] has not been specified, a syntax error is raised for missing values.