How do i open .Ter files?

[vv45689]

I recently made a map and used Baselands as a starter and when i put my map on blockland it says it's baselands i guess it has to do with the .ter file. Please post the program or tell me which one. i attached the .mis; if that's what i need to open please tell me.

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[alex dude]

There is a tutorial here for making maps: http://forum.blockland.us/index.php?topic=91400.0