org-entities-user

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

nil

Documentation:
User-defined entities used in Org-mode to produce special characters.
Each entry in this list is a list of strings. It associates the name
of the entity that can be inserted into an Org file as \name with the
appropriate replacements for the different export backends. The order
of the fields is the following

name As a string, without the leading backslash
LaTeX replacement In ready LaTeX, no further processing will take place
LaTeX mathp A Boolean, either t or nil. t if this entity needs
to be in math mode.
HTML replacement In ready HTML, no further processing will take place.
Usually this will be an &...; entity.
ASCII replacement Plain ASCII, no extensions. Symbols that cannot be
represented will be left as they are, but see the.
variable `org-entities-ascii-explanatory'.
Latin1 replacement Use the special characters available in latin1.
utf-8 replacement Use the special characters available in utf-8.

If you define new entities here that require specific LaTeX
packages to be loaded, add these packages to `org-latex-packages-alist'.

You can customize this variable.

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