Padding Steps

[psionic-k]

There's cases where a no-op step is needed. Right now it can be emulated by throwing a callback step in. This is a bit of an advanced maneuver for the casual babel coder attempting to see the results of a block before moving to the next slide.

When there are several standalone images on a slide, it may be desirable to revisit the slide after showing the image by itself. Peeking for a next image would make this easier. An empty padding step could be queued up if the section-next supported peeking.

[psionic-k]

Peeking support was added.

My most likely choice for adding a padding step is to recognize in the dispatcher:

#+dslide: empty-step

Alternatives include "no-op"

The padding may apply only in one direction