The error message '### replace - Invalid Option-r statement.' results from using either of two commands,
replace /'Option-r'/ 'Option-r'
-or-
replace /Option-dOption-r/ 'Option-r',
where the first Option-r in each line is the tag operator and the Option-d is the shell escape character.
To work around the situation, use two commands,
Find /'option-r'/
-and-
Replace option-6 option-r
where the first option-r is is really the tag symbol, option-6 is really the selection symbol, and the second option-r is really option-r.