The ‘oc.el’ library provides tooling to handle citations in Org via “citation processors” that offer some or all of the following capabilities:
Fontification, tooltip preview, etc.
At-point actions on citations via org-open-at-point.
Add and edit citations via org-cite-insert.
Via different libraries for different target formats.
To use a “citation processor”, the user must load them; for example;
(require 'oc-bibtex)
They can then configure them with org-cite-activate-processor,
org-cite-follow-processor, org-cite-insert-processor, and
org-cite-export-processors respectively.
The included “basic” processor provides all four capabilities.