Description of problem:
I suggest a section such as the following in mount(8):
.SH "Mount options for SE Linux"
\fBcontext=\fP\fISE Linux context\fP
Set the SE Linux context for all files and directories on the file system.
The default is to use the value of the XATTR named "security.selinux" on file
systems which support XATTRs and to use a default according to the filesystem
type for file systems which don't support it.
A commonly used option for removable media is
Version-Release number of selected component (if applicable):
It'll be included to next update. Thanks!