entering unicode? [Hebrew points]

In 
   http://www.m17n.org/emacs-bidi/
It says:

 When "Enable auto composition" is on, Emacs combines Hebrew points
 (U+05B0..U+05C4) with the preceding Hebrew letter. If a precomposed
 form is prepared in U+FB2A..U+FB4E, the corresponding character in the
 mule-unicode-e000-ffff charset is used for display.

with a nice screen-shot. I believe I have seen somewhere - but forgot -
how to insert such unicode characters via some M-x/lisp function
Could someone explain how exactly.

thanks -- yotam