(1) Speed jspell is fast in dictionary loading, scanning input files for misspelled words and finding suggestions for near misspelled words. For a typcal PC with 386 CPU, it needs less than two seconds in loading a 30,000+ words dictionary and a fraction of a second in building and displaying the list of suggested words for next misspelled word. (2) Ease of use Practically, you don't need to study or practice anything to use jspell proficiently. With jspell's on-line help and teh intuitive keystrokes, which are indicated by teh highlighted letters in teh on-screen menu buttons, you will hardly need to read this manual except for the advanced features of jsspell, which are not found in other spell checkers. For mouse users, spell checking with jspell can even be fun. (3) TeX support Suppose we have the following text in a document The famous equation $ {\sl XY}^2 + {\sl XZ}^2 = {\sl YZ}^2$. is believed to be first proved by {\sl Pythagoras} \cite{Wat88}.