TLC has the only lyric aware spell checker!  It already knows about the 1500+ chords in the TLC database plus about 45,000 of the most commonly used words..  In addition, it knows hundreds of unique spellings often used in song lyrics such as...

 "o'er the plains"
You been out ridin' fences for so long now"
"Your prison is walkin' through this world all alone" 

The spell checker also allows you to break words apart to allow them to be positioned properly under the chords.  Just follow the first half of the word with a dash and the Spell Checker will skip the first and second half.

C Cm C 
You can get an- y

A7 D7 D7/A
thing you want at Al- i- ce's

G Am Bbm Bm C Cm C
Rest- a- raunt Walk right in it's a-

F
round the back Just half a mile from the

D7
rail- road track