[mtk: Alex's change switches the comment to the more generally used
form "Definition of..."]
Signed-off-by: Alejandro Colomar <alx.manpages@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
.BI "int dup2(int " oldfd ", int " newfd );
.PP
.BR "#define _GNU_SOURCE" " /* See feature_test_macros(7) */"
-.BR "#include <fcntl.h>" " /* Obtain O_* constant definitions */"
+.BR "#include <fcntl.h>" " /* Definition of " O_* " constants */"
.B #include <unistd.h>
.PP
.BI "int dup3(int " oldfd ", int " newfd ", int " flags );