ispell-buffer-local-dict

ispell-buffer-local-dict is a compiled Lisp function in `ispell.el'.

(ispell-buffer-local-dict &optional NO-RELOAD)

Initializes local dictionary and local personal dictionary.
If optional NO-RELOAD is non-nil, do not reload any dictionary.
When a dictionary is defined in the buffer (see variable
`ispell-dictionary-keyword'), it will override the local setting
from M-x ispell-change-dictionary.
Both should not be used to define a buffer-local dictionary.