docs: remove unnecessary references to the name of each program

docs/str.1

@@ -18,28 +18,31 @@ str
 
 .SH DESCRIPTION
 
-Str tests each character in an arbitrary quantity of string arguments against
-the function of the same name within ctype(3).
+Test string arguments against each other.
+
+The tests in this program are equivalent to the functions with the same names in
+ctype.h(0p) and are the methods by which string arguments are tested.
 
 .SH DIAGNOSTICS
 
-Str exits successfully if all tests pass and unsuccessfully if a test failed.
+If all tests pass, the program will exit with an exit code of 0. If any of the
+tests fail, the program will exit unsuccessfully with an error code of 1.
 
-Str will exit unsuccessfully if a string is empty, as none of its contents
-passed the test.
+An empty string will cause an unsuccessful exit as none of its contents pass any
+tests.
 
-Str will print a message to standard error and exit unsuccessfully if used
-improperly.
+When invoked incorrectly, a debug message will be printed and the program will
+exit with the appropriate sysexits.h(3) error code.
 
 .SH DEPRECATED FEATURES
 
-Str used to have an "isvalue" type as an extension to ctype(3). This was
-removed in favor of using strcmp(1) to compare strings against the empty string
-('').
+Originally, there was an isvalue type as an extension to ctype.h(3), but it
+was removed in favor of using strcmp(1) to compare strings against the empty
+string ('').
 
 .SH BUGS
 
-There's no way of knowing which argument failed the test without re-testing
+There’s no way of knowing which argument failed the test without re-testing
 arguments individually.
 
 If a character in a string isn't valid ASCII str will exit unsuccessfully.