3.2 Slide Registration

(most-recent-slide) → slide?

Returns a slide structure that be supplied re-slide to make a copy of the slide.

(retract-most-recent-slide) → slide?

Cancels the most recently created slide, and also returns a slide structure that be supplied to re-slide to restore the slide (usually in a later position).

(re-slide slide [pict]) → void?

slide : slide?

pict : pict? = (blank)

Re-inserts a slide, lt-superimposeing the given additional pict.

(slide? v) → boolean?

v : any/c

Returns #t if v is a slide produced by most-recent-slide or retract-most-recent-slide.