Current Page: NeXtMidas Training Getting Started - Part 2 Threads in NeXtMidas Registry
- | Registry (the `REGISTRY` command) The registry is a table of named references to all running commands. It allows commands to communicate with other commands by name. When a command is run in the background (or run in a pipe) an entry for it is added to the registry. The registry can be accessed via a table (`REG`) or the `REGISTRY` command (usually shortened to `REG`).
      nM> plot/bg world.prm
      nM> reg
        T: REG             = Table of 3 entries
        O:  PLOT           = P: PLOT,FILE=world.prm,/BG=
        O:  SHELL          = nxm.sys.lib.Shell@c1cd1f
        T:  HANDLERS       = Table of 3 entries
- The registry table has three special entries:
  SHELL | Entry for the NeXtMidas shell.
  HANDLERS | Table of handlers (file, packet, resource, etc.)
  MAIN | When running inside a macro only, an entry for the current macro.
- - The registry table has entries for the currently running commands. By default each entry has the same name as the command being run. If multiple commands with the same name are run, a number is added after the name. If the `/ID=<name>` switch is used, the `<name>` is used. (This is extremely common inside a macro.)
        nM> plot/bg/id=myplot world.prm
        nM> reg
          T: REG             = Table of 3 entries
          O:  SHELL          = nxm.sys.lib.Shell@c1cd1f
          T:  HANDLERS       = Table of 3 entries
          O:  MYPLOT         = P: PLOT,FILE=world.prm,/BG=,/ID=myplot