Can Some one define FreeDTM?

[ffcfoo]

Hello, I am currently looking at some scripts so I can better understand them. I wen't to beginner scripts so I don't have to look for scripts that are long. So I found this one script and I am going threw it and I found this one part I don't understand. So I wen't to the SCAR Divi CDE Manual and it said this:

Unload deformable template editor.

Could someone explain that more? I have no idea what it means, the part of the script I am trying to figure out is this:

procedure FreeDTMs;
begin
  FreeDTM(dtmStoExitMap);
  FreeDTM(dtmArriveAtStoExit);
  FreeDTM(dtmStoMap);
  FreeDTM(dtmWSExitMap);
  FreeDTM(dtmArriveAtWSExit);
  FreeDTM(dtmWSCaveMap);
  FreeDTM(dtmArriveWSCaveMap);
  FreeDTM(dtmCaveCoalMap);
  FreeDTM(dtmArriveAtCaveCoal);
  FreeDTM(dtmWSMap);
  FreeDTM(dtmCoalMap);
  FreeDTM(dtmArriveCoalMap);
  FreeDTM(dtmCaveExitMap);
  FreeDTM(dtmArriveCaveExitMap);
  FreeDTM(dtmNExitMap);
  FreeDTM(dtmArriveNExitMap);
  FreeDTM(dtmNStoMap);
  FreeDTM(dtmArriveNStoMap);
  FreeDTM(dtmPickAxe);
end;

What does FreeDTM do? No big words please, xD. I am not that smart.

[Frement]

Frees the DTM's that are loaded to free up memory.

[ffcfoo]

Frees the DTM's that are loaded to free up memory.

Ahh I see. Thank you.

[Rich]

Adding onto what Frement said, if you don't free DTMs, the script may start to become laggy. Also, if you try to a free a DTM which isn't in use (not been declared) SCAR will give you an error. I'm not sure if Simba will, but I assume so.