Marks a destination for a GO F or GO B command.
M
The M command is used with the GO B and GO F branch commands to mark the destination of the jump.
As a jCL program is executed it "remembers" the location of the last M command it passes through. When a GO B command is encountered, the program can then branch straight back to the remembered location. Remember that an M command must be executed for it to be remembered.
GO F scans forward from the current location until it finds an M command and then resumes execution from there.
If commands are grouped on a line, the M command must be the first command on the line.
See the GO B and GO F commands for examples of usage.
JCL