SAS(R) 9.1.3 Companion for z/OS

FIRST Statement
FIRST ’model-control-statement ’;
Procedures under z/OS SOURCE Procedure 343
The FIRST statement generates initial control statements that invoke a utility program
or that are needed only once. The specified model-control-statement is reproduced,
left-aligned, on a record that precedes all members in the unloaded data set. You can
use any number of FIRST statements. One FIRST statement can specify one model
control statement. Each model control statement generates a record.
LAST Statement
LAST ’model-control-statement ’;
The LAST statement generates final control statements that terminate a utility
program or that are needed only once. The specified model-control-statement is
reproduced, left-aligned, on a record that follows all members in the unloaded data set.
You can use any number of LAST statements. One LAST statement can specify one
model control statement. Each model control statement generates a record.
BEFORE Statement
BEFORE ’model-control-statement’ ;
The BEFORE statement generates a utility control statement before each member. You
can use any number of BEFORE statements. One BEFORE statement can specify one
model control statement. Each model-control-statement that you specify is reproduced,
left-aligned, on a record that precedes each member in the unloaded data set.
By default, PROC SOURCE generates control statements for the IBM IEBUPDTE
utility program before each member of an unloaded data set. You can use the BEFORE
and AFTER statements to override the default and generate control statements for
other utility programs. To prevent PROC SOURCE from generating these statements,
use the BEFORE statement with no parameters.
Options for the BEFORE and AFTER statements are the same. A list of these
options follows the description of the AFTER statement.
AFTER Statement
AFTER ’model-control-statement’ ;
The AFTER statement generates a utility control statement after each member. You
can use any number of AFTER statements. One AFTER statement can specify one
model control statement. Each model-control-statement that you specify is reproduced,
left-aligned, on a record that follows each member in the unloaded data set.
By default, PROC SOURCE generates control statements for the IBM IEBUPDTE
utility program after each member of an unloaded data set. You can use the AFTER
statement to override the default and generate control statements for other utility
programs.
The following options are used in the BEFORE and AFTER statements:
ALIAS
tells SAS to produce a record containing the model-control-statement only for each
defined alias. (The alias is placed into the record at the specified column, if any.)