Description of problem:
The manual page for systemd.exec(5) mentions mount(1), but that manual page
does not seem to exist, only mount(8) and mount(2).

Version-Release number of selected component (if applicable):
systemd-44-21.fc17.x86_64

How reproducible:
Every time

Steps to Reproduce:
1. man 5 systemd.exec
2. Search for MountFlags=
  
Actual results:
Takes a mount propagation flag: shared, slave or private, which control whether
namespaces set up with ReadWriteDirectories=, ReadOnlyDirectories= and
InaccessibleDirectories= receive or propagate new mounts from/to the main
namespace. See mount(1) for details. Defaults to shared, i.e. the new namespace
will both receive new mount points from the main namespace as well as propagate
new mounts to it.

Expected results:
An existing man page.

Additional info:
I also have util-linux-2.21.2-3.fc17.x86_64 and man-pages-3.35-4.fc17.noarch on
my system.