reftex-add-section-levels
reftex-add-section-levels is an autoloaded Lisp function in `reftex-auc.el
'.
(reftex-add-section-levels ENTRY-LIST)
Add entries to the value of `reftex-section-levels'.
The added values are kept local to the current document. The format
of ENTRY-LIST is a list of cons cells ("MACRONAME" . LEVEL). See
`reftex-section-levels' for an example.