Editing Job Control Language (section)

===z/VSE===
For VSE JECL statements start with '<code>* $$</code>' (note the ''single'' space).  The Job Entry Control Language defines the start and end lines of JCL jobs. It advises [[VSE (operating system)|VSE]]/[[IBM POWER (software)|POWER]] how this job is handled. JECL statements define the job name (used by VSE/POWER), the class in which the job is processed, and the disposition of the job (i.e. <code>D</code>, <code>L</code>, <code>K</code>, <code>H</code>).

{| class="wikitable"
|-
! JECL statement<ref>{{cite book|last=IBM Corporation|title=DOS/VS POWER/VS Installation and Operations|year=1974|url=http://bitsavers.trailing-edge.com/pdf/ibm/370/DOS_VS/GC33-5403-1_DOS_VS_POWER_VS_Installation_and_Operation_Sep74.pdf}}</ref> !! Function !! Example
|-
| <code>* $$ CTL</code> || Establishes a default ''input class'' || <code>* $$ CTL CLASS=A</code>
|-
| <code>* $$ JOB</code> || Specifies attributes of a job || <code>* $$ JOB JNM=PYRL,PRI=9</code>
|-
| <code>* $$ EOJ</code> || Marks the end of a job || <code>* $$ EOJ</code>
|-
| <code>* $$ RDR</code> || Inserts a file from a 3540 diskette into the input stream || <code>* $$ RDR SYS005,'fname',2</code>
|-
| <code>* $$ PRT</code> || Specifies characteristics of spooled print files<br> "LST' is a synonym for "PRT" || <code>* $$ PRT FNO=STD,COPY=2</code>
|-
| <code>* $$ PUN</code> || Specifies characteristics of spooled punch files || <code>* $$&nbsp;PUN&nbsp;DISP=T,TADDR=280</code>
|-
| <code>* $$ SLI</code> || Inserts data ("book") from source statement library into the input stream|| <code>* $$ SLI A.JCL1</code>
|-
| <code>* $$ DATA</code> || Inserts data from the card reader into a book retrieved from the source statement library|| <code>* $$ DATA INPUT1</code>
|}

Example:
<syntaxhighlight lang="jcl">
* $$ JOB JNM=NAME,DISP=K,CLASS=2

[some JCL statements here]

* $$ EOJ
</syntaxhighlight>