TR mode - easier ERASE method

[sjturner73]

USE CASE

TR Mode sequencing
A3 exists on step 4
I move cursor to step 4
I press A3 and if A3 exists (which it does) then it is removed
No need to press ERASE to remove a step if it already exists on that step

[sinewaves]

agreed, very much

[Leighty]

This makes sense to me