At the user interface we can make a list of numbered bullets start at 0 rather than 1 by making a numbered list with 0. inserted in front of the first text and then backspacing to wipe out the original 1 bullet:
1. 0. Zero
Now backspace before the 0 to wipe out the 1 then PowerPoint will use the 0 as the numeric bullet and adjust the subsequent bullets:
Another technique is to start a list with no bullets and type the 0. Zero line, then type the 1. One line and PowerPoint will see that you are starting a list and turn the lines into a numeric list starting with 0.
My question is how to automate this using VB when creating slides with Office 2007 or 2010 VSTO.
VSTO appears to be an esoteric art, so I am giving 500 points for what could be 2 lines of code!