I found a great mouse emulator script for the popular Open Source program, Autohotkey. I use this script with Autohotkey to relieve the stress of mouse clicks on my right index finger. Now I can press F1 for a mouse click and F2 for a right click. If I hold the F1 key down, it simulates a left-mouse-click-and-hold. Right now, I find it indispensable.
It's not easy to find an Autohotkey script that does this. If you do, please let me know. I spent at least 2 hours looking for a simple script that could do this. All thanks to the forum member "deletemeafteraweek" for posting this, whoever he or she is.