I have recently discovered the 'Background Mask' in the MText Dialog box. - This is pretty cool.
So, after checking the help file, I discovered what I believe is the same type of thing, except for blocks - 'wipeout'
So, I tried using it in the attached block, to keep the vertical like from showing thru the block. (I hope that makes sense).
When I tried making the Wipeout in the Block Editor, it gives me the following message 'The polyline must be closed and made up of only line segments.'
I believe that it IS a close Polyline and it is made up of multiple segments.
What am I missing?
craigr