This is from a reply written by Cyber Taz. The question is similar to
yours.

Cells were never intended to store large volumes of text. They have a
limit
of 409 points in height (roughly 34 lines of 10 pt. type, assuming 120%

leading). There is also some technical glitch with content that falls
within
the 256-1024 character range.


If you need to include that amount of text as a unit, you might want to

consider using Cell Comments or drawing Text Boxes/AutoShapes to store,

display & print that type of content more readily.