The SUBSTITUTE (abbreviated S) command replaces occurrences of one
 string of characters with another string.

 Format: SUBSTITUTE/string-1/string-2/ [range] [/BRIEF[:n]] [/QUERY] [/NOTYPE]

 Any nonalphanumeric character except % can be used as string delimiters.

 All occurrences of string-1 within the specified range are replaced with
 string-2.  If you do not specify range, a single occurrence in the
 current line is substituted.  The line in which the substitution
 occurred is typed after each substitution.