allout-yank-processing is an interactive compiled Lisp function in `allout.el'.

(allout-yank-processing &optional ARG)

Incidental allout-specific business to be done just after text yanks.

Does depth adjustment of yanked topics, when:

1 the stuff being yanked starts with a valid outline header prefix, and
2 it is being yanked at the end of a line which consists of only a valid
topic prefix.

Also, adjusts numbering of subsequent siblings when appropriate.

Depth adjustment alters the depth of all the topics being yanked
the amount it takes to make the first topic have the depth of the
header into which it's being yanked.

The point is left in front of yanked, adjusted topics, rather than
at the end (and vice-versa with the mark). Non-adjusted yanks,
however, are left exactly like normal, non-allout-specific yanks.