strfry \- randomize a string
.SH SYNOPSIS
.nf
-.B #define _GNU_SOURCE
+.BR "#define _GNU_SOURCE" " /* See feature_test_macros(7) */"
.br
.B #include <string.h>
.sp
GNU C Library.
.SH "SEE ALSO"
.BR memfrob (3),
-.BR string (3),
-.BR feature_test_macros (7)
+.BR string (3)