Beside main dictionary which contains common used words in a language, you may need to use special dictionary such as medical, legal, technical, etc. To use those dictionary, you need to add it to the dictionary list.

To add additional dictionary for a language:

1. Select the language for which you want to add additional dictionary from the Language drop-down list on the Speller Engine Manager tab in the Spell Checker Driver Manager window.
2. Press the Add button.
3. In the Add Additional dictionary window, locate the dictionary that you want to use with this language. Additional dictionaries have .lex extensions. View the Add additional dictionary window.
4. Press the Open button. This changes the entry for the additional dictionary for this language in your registration database.