Why is isBold a formula option and not other text effects, such as IsHighlighted or IsItalic?

For example, we want to make selected data more readable by making it highlighted instead of bold. I thought I could simply change swap the word "Bold" for "Highlighted," but instead I got the #NAME? error. Our current code is below.

IF(IsBold(C5),"1","0")

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isBold Excel issue.JPG (9.6 KB, 13 views)