When you place an underground belt over an existing line of regular transport belts, it automatically removes the unconnected regular belt in between the endpoints of the underground belt. The belt and the items on it are placed in the players inventory.

Only restrictions are:

Belts must move in the same direction

Version 1.0.0:
- Added Safe mode (Now 3 modes: Enable/Safe/Disable)
......Safe mode only removes belts when ALL belts are facing the correct direction as opposed to regular mode where ANY belt facing the correct direction is removed.
- Added Verbose setting (Enable/Disable, default: CTRL + SHIFT + U)
......Prints the number of belts removed (helpful when you unknowingly remove a belt)

-Settings should now work on a per-player basis in multiplayer (This isn't really possible for me to test so let me know if it's not working correctly.)

0.14.2 Update:
-Added hotkey (default CONTROL + U) to enable/disable the functionality.

0.14.1 Update:
-Now works for all surfaces and belt types including mods