oref-default

oref-default is a Lisp macro in `eieio.el'.

(oref-default OBJ SLOT)

Get the default value of OBJ (maybe a class) for SLOT.
The default value is the value installed in a class with the :initform
tag. SLOT can be the slot name, or the tag specified by the :initarg
tag in the `defclass' call.