The Tokenized Parameter List
To create a tokenized parameter list, CMS truncates or pads each argument
in the input data to 8 bytes. The first token must be the name of
the program you call. In addition, CMS treats each parenthesis as
an argument and it appends an 8-byte fence
(delimiter) of X'FF' to
mark the end of the tokenized parameter list.
SCAN stores a pointer to the tokenized parameter list in general register 1.