Enter the search mode and category, and enter the word or words you want to search for.
Before searching, the system checks whether the word is part of Pompeu Fabra's Complete Works (OCPF) vocabulary or not.
If the word is not in it, the search is not done; the search engine shows an error message,
highlights the word in italics and adds two asterisks to the right (by clicking on the asterisks a pop-up window with an explanation is displayed).
However, in searches of more than one word in OR-type mode, the search is done
when at least one of the two words is in the OCPF vocabulary.
![Institut d\](https://ocpf.iec.cat/peu_iec.jpg "Institut d\")
