.TH DOTTY 1
.SH NAME
dotty \- A Customizable Graph Editor
.SH SYNOPSIS
.B dotty
[
.B -V
] [
.BI -lm mode
] [
.BI -el lev
] [
.I file
]
.SH DESCRIPTION
.B dotty
is a graph editor for the X Window System.  It may be run as a standalone
editor, or as a front end for applications that use graphs.  It can control
multiple windows viewing different graphs.

.B dotty
is written on top of
.B dot
and
.BR lefty .
.B lefty
is a general-purpose programmable editor for technical pictures.  It has an
interpretive programming language similar to AWK and C.  The user interface and
graph editing operations of
.B dotty
are written as
.B lefty
functions.
Programmer-defined graph operations may be loaded as well.  Graph layouts are
made by
.BR dot ,
which runs as a separate process that communicates with
.B lefty
through pipes.

If the input graph contains xdot attributes,
.B dotty
will use that to display the graph. Otherwise, it runs
.B dot
to obtain layout information.
.SH USAGE
The file name is optional. If present, the graph contained in that file is
displayed in the
.B dotty
window.
.SH OPTIONS
.TP
.B -V
Prints the version.
.TP
.BI -lm mode
Sets the layout mode. The \fImode\fP can be \fBsync\fP or \fBasync\fP. The default is \fBasync\fP.
.TP
.BI -el lev
Sets the mesage level. The \fIlev\fP can be \fB0\fP or \fB1\fP. The default is \fB0\fP.
.SH BUGS
The lefty parser does not accept anonymous graphs.
.SH SEE ALSO
dot(1), lefty(1), lneato(1), xdot(3)
.br
.I dotty
user guide.