That depends on the structure of your report.
If (differentFieldl = "Yes" ; "Put your sentence here." )
could be defined in a calculation field and then this field can be placed on a layout. (Select Text as your return type.) If you need to insert that sentence into the middle of a paragraph of text, that can be done also.
I hadnt realised I could insert calculations into text. Brill. Will giver it a go after lunch...Thank you!