/usr/share/doc/flex/examples/manual/eof_test03.txt is in flex 2.6.4-6.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 | INCLUDE #3
This is the third file that will
be included.
>>> echo "I am `whoami`!!"
|