Zemismart Zigbee roller blind (border, click control, reverse direction)

I have a Zemismart Zigbee roller blind. HA control works fine, however, there are a few controls that I have no clue as to what they do. Can anyone shed some light?

They are…
border…with up, down, up_delete, down_delete, remove_top_bottom options
Click control…with up, down options
Reverse direction…with forward, back options

image

Thanks

Click control moves blind one step up/down
Reverse direction reverses the direction of motor operation (allows you to set which way the blind actually opens)
Border is for setting limits; up/down sets the limit while others remove them (although naming convention seems to not switch meaning, when motor direction is reversed)