2.
When a question mark appears
on
the screen, enter the remaining
parameters (enclosed
in
parentheses).
Examples
DO
DR
gJE
/
JCL
(ENTER)
compiles and executes the file named DRIVE/JCL.
DO
=
DR
I
1,lE
/
JCL
(ENTER)
executes the file named DRIVE/JCl without compiling
it.
DO
$
DR
I
IjE
(ENTER)
compiles the file named DRIVE/JCl without executing
it.
Since you
did not specify
an
extension to DRIVE, it defaulted
to
JCL.
You
can
LIST the SYSTEM/JCl file
to
see if the
JCl
compiled properly.
DO
MY/JCL
(@THIRD)
(ENTER)
compiles and executes the program named MY/JCL. All instructions
in
the program are ignored
up
to the label (@THIRD). Compilation
begins
at
the line folloWing the label and continues until the next label
or the end of the file
is
reached.
DO
*
(ENTER)
executes SYSTEM/JCl, which contains the last DO file that was
compiled.
DO
TEST/NEW:2
(D=5IE=6)
(ENTER)
compiles and executes the file TEST/NEW
on
Drive
2.
The variable
parameters D
=5 and E= 6 are passed
as
needed during compilation.
Error Conditions
If
you specify @Iabel, you must compile the
DO
file, or an error is
generated.
The occurrence of any error aborts the
DO
execution.
When you specify the
* control character, a "File not
in
directory"
error occurs if there
is
no previously compiled DO file to rerun.
When you specify the
$ control character, the system compiles the
JCl
file and informs you of any errors that occur. This lets you see if
the file compiles properly before you actually execute
it.
When you
compile a
JCl
file, a disk
in
your system must be write-enabled, so
the system can write the compiled information to a file named
SYSTEM/JCL.
When you use the
= character, you cannot use some of the
JCl
features. See the
JCl
section of this manual.
1-73
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