$ComTab{'y'}=[ 2, 'tra', \&Emit, '' ]; #ok
=item [2addr]B<y>B</>I<string1>B</>I<string2>B</>
-In the pattern space, replace all characters occuring in I<string1> by the
+In the pattern space, replace all characters occurring in I<string1> by the
character at the corresponding position in I<string2>. It is possible
to use any character (other than a backslash or newline) instead of a
slash to delimit the strings. Within I<string1> and I<string2>, a
=item `\' cannot be last in substitution
-A `\' in a subsitution string is used to make the subsequent character literal.
+A `\' in a substitution string is used to make the subsequent character literal.
=item conflicting flags `%s'