+ function
+ returns an integer greater than, equal to, or less than 0,
+ if
+-.Fa s1
++.Fa ws1
+ is greater than, equal to, or less than
+-.Fa s2 .
++.Fa ws2 .
+ .Pp
+ No return value is reserved to indicate errors;
+ callers should set
+@@ -95,7 +115,8 @@