I sometimes wish to surround a group of VIs with a 'comment box' that explains that particular code section, for example to explain how the VIs interact with each other or why they were placed in a certain order.
To simulate this, I use Flat Sequence Structures, Flat Frames or Diagram Disable Structures with empty 'Disabled' cases (screenshot below).
All methods are workarounds. It would be useful if there was a 'Comment Structure' or 'Comment Box' that was essentially a Flat Frame with an attached sub-label diagram.
The Comment Structure should be compiled-out and have no effect on the compiled code (unlike the Flat Sequence Structure)
The Comment Structure would not have any 'Disabled' cases behind it
The border of the Comment Structure should be as thin as possible. For example, the border of the Flat Frame seems too thick when I use that workaround.
I'd be happy if the Comment Structure consists of a single box and there was no option to 'Add Frame' like there is with the FSS, even though I sometimes use a multi-frame FSS to simulate back-to-back Comment Structures (like in the screenshot above).