Word characters (\w), space (\s), comma (,), apostrophe ('), and dash (-) are currently allowed. Other characters get stripped, but if you want to allow other characters, you'd need to edit the strip_text function, appearing in both the gal_class_core.php and gal_class_dictionary.php files. Look for all instances of
[^\w\s,\'\-] and add whatever you want to the character class, making sure to not allow unsafe characters.
[^\w\s,&;\'\-] might do with either B&B or B&B but it'd need a
test
.