Examples of the REGIONX parameter

//REGNX001  JOB MSGLEVEL=1
//STEP001  EXEC PGM=ZTT,REGIONX=(512K,1G)
//ZTTOUT   DD SYSOUT=*,DCB=(LRECL=133,BLKSIZE=133,RECFM=FBA)
//ZTTIN    DD *        
/*

To request 1 gigabyte above the line and 500 KB below the line for REGIONX values, specify:

 REGIONX=(500 K,1G)