If the SYSPARM function
returns a value to a variable that has not yet been assigned a length,
by default the variable is assigned a length of 200.
SYSPARM allows you to
access a character string specified with the SYSPARM= system option
at SAS invocation or in an OPTIONS statement.
Note: If the SYSPARM= system option
is not specified, the SYSPARM function returns a string with a length
of zero.