Thanks Alexey four previous reply - but I was a little confused.
I do have a few more questions about how this works - assuming I have a template file with a title master and one blank side - how do I set the first slide to "inherit" from the TitleMaster?
I tried the following but the IF evaluated to false:
_currentSlide = _presentation.GetSlideByPosition(1);
if(_presentation.GetSlideByPosition(0) != null)
_currentSlide.MasterId = _presentation.GetSlideByPosition(0).SlideId;
As usual - thanks for your help.