by libarchive but never caught on with other mtree implementations.
.Pp
Each line is interpreted independently as one of the following types:
.Bl -tag -width Cm
-.It Signature
-The first line of any mtree file must begin with
-.Dq #mtree .
-If a file contains any full path entries, the first line should
-begin with
-.Dq #mtree v2.0 ,
-otherwise, the first line should begin with
-.Dq #mtree v1.0 .
.It Blank
Blank lines are ignored.
.It Comment
.Xr find 1 ,
.Xr mtree 8
.Sh BUGS
-The
-.Fx
-implementation of mtree does not currently support
-the
-.Nm
-2.0
-format.
-The requirement for a
-.Dq #mtree
-signature line is new and not yet widely implemented.
.Sh HISTORY
The
.Nm