2C-associate-buffer

2C-associate-buffer is an interactive autoloaded compiled Lisp function in `two-column.el'.

It is bound to <f2> b, C-x 6 b.

(2C-associate-buffer)

Associate another buffer with this one in two-column minor mode.
Can also be used to associate a just previously visited file, by
accepting the proposed default buffer.

(See C-h m .)