Special terms are mostly transliterated arabic words, such as “qadr”, “ka’bah”, “iblis”, etc. You can enter them by typing in the explore box, just like you type any other word. The system has some tolerance for spelling variations, eg. “aisha”, “a’isha”, “aishah” are all recognised.
However, to assist you with entering only valid special terms, we provide the Special Terms Selector pane that you can pull down by clicking the ‘SPECIAL TERMS’ button in the topbar, which looks as follows and is self-explanatory: