List Numbering

[Peter]

I am creating a rather simple slideshow with one image on each slide and a
label for each image. Is there any way to insert an automatic list number in
those labels similar to the list feature in Word? That way, the first slide
will have a label that begins with 1., the second with 2., etc. Likewise, if
I add a new slide between 1 and 2, the label that previously read 2. will
automatically become 3.

Thanks,

Peter