Well actually, I had thought of adding that feature in the program, but I have had neither the time nor the energy to devote to it. I'll put it on my plate for something to do in the future if and when I find time.
I first wrote the program back in 1996 when I was first starting to utilize attributes on a regular basis. I quickly learned that the attribute editing powers of AutoCAD were limited, (at that time), to merely changing the text string. If you wanted to modify the tag name, change the visibility bits, text style, angle, text width, or any of the other "attributes" of an attribute, it had to be done with a custom program... so I created one. This is the culmination of those efforts over the course of 3 major revisions and several minor ones.
Initially I put it out as a shareware program, but people either didn't use it or nobody ever registers shareware.... When I released 3.1 I decided to remove the nag screen because it evidently didn't move people to register it and it was code that I did not need to maintain... and since I was no longer requiring registration, I stopped development on the help files. The last version had the help button on the dialog, but did not include any help files.
If I thought that I could get enough people to register it to use, I would devote more time to it's development, but until that time comes, I will unfortunately not be able to do so, simply because I have those other jobs that pay the bills that I need to do.
Anyway, I can see a version 5 coming out probably within the next several months, as long as there are users who find the program useful. It is tough deciding on whether to continually upgrade programs when you have no feedback on its usefulness.
If there are some things you would like to see added in the future, let me know. Some that I have been thinking are:
Change text boxes to combo boxes for layers and text styles.
Add a color dialog for selecting attribute colors.
A button for a selection set.
Attribute justification
Anyone have other suggestions?