A user wordlist file contains a list of words that are not in the default dictionaries, but considered correct by the user. The user wordlist file is language dependent. For the US English language the file US_USER.4SPELL is used (filename syntax is: "language"_USER.4SPELL). This file could look like this:
TeX LaTeX Mondriaan HTMLWhen any of these words are encountered in your document, they will be considered correct words. They will be colored by the user wordlist color.