Hi Paul, thanks for the feedback.

> Maybe a filter on the input boxes to reject any kind of keystrokes other than numerals would work better?

There is actually a filter in place already. But there are a few keys other than numbers that are valid to type into that point coordinate box: R, @, < , W .

R and @ are used for relative point entry, < for entering an angle constraint, and W for world polar coordinates.

Did you happen to be using one of those keys? Other keys should work, for instance here I set up "K" for keeping construction lines and I don't have any problem triggering it while inside the line command for example.

- Michael