## Processing List

### Definition

A processing list is a list of description files and module files to be processed, as well as operating system commands to be executed. They can also contain additional processing lists and options.

Processing lists have the file extension .mac.

### Use

VMAKE processes the entries in a processing list from top to bottom.

All of the listed files, as well as any other files listed as links, are first checked down to the lowest level to determine whether they have been changed with respect to a target created previously. If there were any changes, then VMAKE recreates the targets.