.RB [ \-user
.IR username ]
.I file
.RB [ \-user
.IR username ]
.I file
.RB [ \-version ]
.RB [ \-help ]
.RB [ \-version ]
.RB [ \-help ]
.IR mechanism ]
.RB [ \-user
.IR username ]
.IR mechanism ]
.RB [ \-user
.IR username ]
.RB [ \-width
.IR columns ]
.RB [ file
.RB [ \-width
.IR columns ]
.RB [ file