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+.TH BCOMPS 1 "18 November 2003"
+.SH NAME
+bcomps \- biconnected components filter for graphs
+.SH SYNOPSIS
+.B bcomps
+[
+.B \-stvx?
+]
+[
+.BI -o outfile
+]
+[ 
+.I files
+]
+.SH DESCRIPTION
+.B bcomps
+decomposes graphs into their biconnected components,
+printing the components to standard output.
+.SH OPTIONS
+The following options are supported:
+.TP
+.B \-s
+No output graph is printed. Implies the
+.B \-v 
+flag.
+.TP
+.B \-t
+Print the underlying block-cutvertex tree.
+.TP
+.B \-x
+Each biconnected component is printed as a separate root graph.
+.TP
+.B \-v
+Prints number of blocks and cutvertices.
+.TP
+.BI \-o " outfile"
+If specified, each root graph will be written to a different file
+with the names derived from \fIoutfile\fP. In particular, 
+if both \fB-o\fP and \fB-x\fP flags are used, then each
+block is written to a different file. If \fIoutfile\fP does
+not have a suffix, the nth block of the ith graph is written 
+to \fIoutfile_n_i\fP. However, the 0th block of the 0th graph is written to
+\fIoutfile\fP.
+.sp
+If \fIoutfile\fP has a suffix, i.e., has the form \fIbase.sfx\fP,
+then the files will have the same name as above, except appended with \fI.sfx\fP.
+.sp
+The block-cutvertex tree of ith graph is written to \fIoutfile_n_T\fP,
+with an appended suffix if specified.
+.LP
+By default, each input graph is printed, with each
+block given as a subgraph whose name is a concatenation of
+the name of the input graph, the string "_bcc_" and the
+number of the block.
+.SH OPERANDS
+The following operand is supported:
+.TP 8
+.I files
+Names of files containing 1 or more graphs in dot format.
+If no
+.I files
+operand is specified,
+the standard input will be used.
+.SH RETURN CODES
+.B bcomps
+returns
+.B 0
+if all the input graphs are biconnected; and
+non-zero if any graph has multiple blocks, or any error occurred.
+.SH "BUGS"
+It is possible, though unlikely, that the names used for connected
+components and their subgraphs may conflict with existing subgraph names.
+.SH AUTHORS
+Emden R. Gansner <[e-mail]>
+.SH "SEE ALSO"
+ccomps(1), gc(1), dot(1), gvpr(1), gvcolor(1), acyclic(1), sccmap(1), tred(1), libgraph(3)