# jCL M
Updated: 2/24/2021, 3:51:59 PM
Created: 2/24/2021, 3:51:59 PM
Last Updated By: Daniel Klein
Read Time: 1 minute(s)
Tags: go jcl
This command marks a destination for a GO F or GO B command. It takes the general form:
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 also GO B and GO F commands for examples of usage.
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