.Nd Utility to manage boot environments on ZFS
.Sh SYNOPSIS
.Nm
.Op Fl h\&?
.Op Fl h Ns | Ns Fl \&?
.Op Fl r Ar beroot
.Cm activate
.Pp
.Ss Supported Subcommands and Flags
.Bl -tag -width activate
.It Xo
.It Fl h Ns | Ns Fl \&?
.Fl h |
.Fl \&?
Print usage information.