The EVALUATE command
parses the Groovy statement that is provided in the quoted string
into a groovy.lang.Script object and calls the Run method on the Script.
If one of the LOAD, PARSEONLY, or NORUN options is present, then this
command parses the Groovy statement into a Class object but does not
run it. Any classes that are defined by the Groovy code are then available
for use by PROC GROOVY statements or by Java DATA Step Objects.
EVAL is an alias for
the EVALUATE command.