How to create a softkey in equation lib to show a PNG that illustrate the equation?

[raider]

Hello,

I am trying to adapt Bernaud Michaud's equation library for usage.

https://www.hpmuseum.org/forum/thread-14...f+Material

It is working fine but I would like to have a softkey that when press, show a specific png image that illustrate the purpose of that formula and to give a bit of context.

So if I am in the solver for formula E1, pressing the softkey will show the png image specific for formula E1, and likewise when I am in formula E2, the softkey will show the image specific for E2.

How do I achieve this please?

Pointers appreciated.

Thanks