Thanks for the link. I noted the following:-
"...... use of blinking cells in US Government applications may be in violation of Section 508 of the Rehabilitation Act of 1973 (because blinking cells may trigger epileptic seizures)."
Epinn
See:
http://www.cpearson.com/excel/BlinkingText.htm

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Gary's Student
"Lloyd" wrote:
> Please help I to make cell b1 flash when it becomes greater than 5