Once saved you should run the internal validation routine to check for errors. The file checker is accessed by selecting the "Check Phrase File" option in the top menu. Choose your file, click 'Open' and HangARoo begins to validate your phrase file and will report any errors.
There are three things the check looks for:
<!-- <phrase>THISPHRASEISTOOLONGTOFIT</phrase> -->
Once your phrase file is error-free, select "Load Phrase File" from the top menu and select your file. That's it. You're done.
To go back to the built-in phrases, select "Use Default Phrases" from the top menu.
Note: If you play the game with a custom phrase file and quit without switching back to the default phrases, HangARoo will automatically load that file the next time you play.