Report the current location of the pointer using the DEC locator feature.
cmd < 2 and the terminal is watching the pointer, it disables the locator, disabled all locator events and just sends a report of type 0.
cmd < 2 and the mouse reporting mode is DEC locator:
The terminal replies:
if the DEC locator is not the currently active mouse tracking mode or the pointer is outside the terminal.
Otherwise it reports the pointer position using a report of event type 1.
If one-shot activation is used after either reply the locator is disabled.