: proto, no #define
: d function has documentation with its source
: s static function, should have an S_ prefix in
-: source file
+: source file; for macros (m), suffix the usage
+: example with a semicolon
: n has no implicit interpreter/thread context argument
: p function has a Perl_ prefix
: f function takes printf style format string, varargs
: E visible to extensions included in the Perl core
: b binary backward compatibility; function is a macro
: but has also Perl_ implementation (which is exported)
+: U suppress usage example in autogenerated documentation
:
: Individual flags may be separated by whitespace.
: