org-entities-ascii-explanatory

org-entities-ascii-explanatory is a variable defined in `org-entities.el'.
Its value is

nil

Documentation:
Non-nil means replace special entities in ASCII.
For example, this will replace "\nsup" with "[not a superset of]"
in backends where the corresponding character is not available.

You can customize this variable.

This variable was introduced, or its default value was changed, in version 24.1 of Emacs.