This signifies that the formula is an array formula - it must be
committed when typed in (or when subsequently edited) by
CTRL-SHIFT-ENTER instead of the normal ENTER. Excel will put the curly
braces around the formula when viewed in the formula bar - you must not
type these yourself.

Hope this helps.

Pete

Marcus Sparcus wrote:
The symbols { and } appear at the start and end of a formula but disappear
when entering edit mode on the cell. Also the formula cannot be changed as
pressing enter from the edit mode causes the formula to produce a #VALUE!
error.
Can anybody help?