I was just pointing out that if it were a command, it could simply be called with an apostrophe, just like any other transparent command.
On the other hand, it might be practical to include it into the standard RT menu, where it could be called by a key letter. I like this idea, I might make this happen.

@Kent1Cooper wrote:
And what would you expect to happen if you typed in the command name PF without being in a command, and without a reference point? If someone wanted a single-purpose command, for example one that would always and only start a LINE command perpendicular from something, that could be done. ...
This is what I have now. It just draws a line 5 units long. Just a quick simple tool that serve good it's purpose. 