OK, so how about this:

INPUT_PROP_DIRECT:

This property idicates that device coordinates can be directly mapped to
screen coordinates (not taking into account trivial transformations,
such as scaling, flipping and rotating). Non-direct input devices
require non-trivial transformation, such as absolute to relative
transformation for touchpads. Typical direct input devices:
touchscreens, drawing tablets; non-direct devices: touchpads, mice.

INPUT_PROP_POINTER:

This property indicates that the device is not transposed on the screen
and thus requires use of an on-screen pointer to trace user's movements.
Typical pointer devices: touchpads, tablets, mice; non-pointer device:
touchscreen.

How does this sound?

Excellent, thanks for that. Fits nicely in a documentation patch - you or me?

Now, let's move on. ;-)

Thanks,
Henrik