Maybe it refers to a named cell.
For example =IF(A1,TRUE,FALSE) will return TRUE for any non-zero number in
A1
So if A1 is named Switch, then =IF(Switch,TRUE,FALSE) will behave the same
way
Alternatively Switch could be a named formula but the logic is the same
best wishes

--
Bernard V Liengme
www.stfx.ca/people/bliengme
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"DXAT" wrote in message
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I do not understand the use of 'Switch' at the place of the logical test
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