Clicking "What forms can be filed electronically" under most commonly asked questions, I get nothing, other than  a quick flash on the screen.  I can't find it anywhere else with any other search. 

What search term should I use for this question?

So, first, how do you access a list of forms that be filed electronically?  More specifically, is the Preparers Due Diligence Worksheet (not the 8867) electronically filed?