Would it be possible to add a simple “T”-shaped arrow head ?

It is a very common sign in the biological sciences to indicate a negative interaction between two entities.

For brainstorming it would help me - and probably others in this field - a lot.

A similar sign exists already, but I find it irritating to use (it looks like a cross).
I would really appreciate it to add this simple arrow head to the tools.

Thank you very much!

I really love the app so far!