The spelling checker automatically selects the main lexicons based on the current working language. If you switch to another language, another set of main lexicons is retrieved.

For some languages, you can have country-based domain lexicons which can be chosen in your Workbench preferences. Further more you can have your own custom lexicon also to be edited in your Workbench preferences. This can be done in the following way.

Opening the Workbench preferences

Select ‘My profile’ in the tree and click on the ‘Workbench preferences’ button on the pane on the right.

Spelling checking options

Next, click the ‘Spelling’ tab on the ‘Workbench preferences’ window to see all the spellings options. In the 'Domain' drop down list you can select your domain lexicon if any available.