Words are added to the Browser Dictionary constantly while you work.   You can manually add new words or delete others on the Dictionary Editor Page of the Options Panel.    There are two English dictionaries available. The 35,000 word dictionary is loaded by default.     If you use a large vocabulary switch to the 135,000 word dictionary for improved results.   Your custom word list is in the my_words file in the TAPLESSxp program folder.