| DUMP | Save current environment to file |
| SET-DUMP | Set the file for automatic dumping of the environment |
| RESTART | Retrieve an environment from a .DMP file |
The environment (i.e the data in the stack, a list of open data files and the state of all control flags, variables and defaults, can be saved in an unformatted binary disc file in the user's space. By default the standard file SPECX.DMP is rewritten after every command at the top-level which alters the contents of either FLAGS for STACKCOMM; by using DUMP explicitly however the environment can be saved on a special file, either as protection against a crash, or for later use (via the RESTORE command). Automatic dumping (after each top-level command) is controlled by the SET-DUMP command.