.\" ----------
.\" figure-4
.\"
.\"	Copyright (c) 2003-2009, PostgreSQL Global Development Group
.\"	Author: Jan Wieck, Afilias USA INC.
.\"
.\" 
.\" ----------
.PS
.ps -2
Outer:	box wid 4.0 ht 3.0
		"Figure 3" at Outer.s below

NodeA:	box wid 1.2 ht 1.0 with .nw at Outer.nw+(0.2,-0.2) fill 0.1
		"\fBNode A\fR" at NodeA.nw ljust below
	
NodeB:	box wid 1.2 ht 1.0 with .ne at Outer.ne+(-0.2,-0.2) fill 0.1
		"\fBNode B\fR" at NodeB.nw ljust below

NodeC:	box wid 1.2 ht 1.0 with .sw at Outer.sw+(0.2,0.2) fill 0.1
		"\fBNode C\fR" at NodeC.nw ljust below

NodeD:	box wid 1.2 ht 1.0 with .se at Outer.se+(-0.2,0.2) fill 0.1
		"\fBNode D\fR" at NodeD.nw ljust below

Set1A:	box wid 1.0 ht 0.4 with .c at NodeA.c+(0.0,0.0) fill 0.2 "Set 1" "Origin"
Set1B:	box wid 1.0 ht 0.4 with .c at NodeB.c+(0.0,0.0) fill 0.0 "Set 1" "Subscribed"
		line from Set1A.e to Set1B.w dotted -> thickness 2.0 "(1. fails)" above
Set1D:	box wid 1.0 ht 0.4 with .c at NodeD.c+(0.0,0.0) fill 0.0 "Set 1" "Subscribed"
		line from Set1B.s to Set1D.n -> thickness 2.0
Set1C:	box wid 1.0 ht 0.4 with .c at NodeC.c+(0.0,0.0) fill 0.0 "Set 1" "Subscribed"
		line from Set1A.s to Set1C.n dotted -> thickness 2.0 "(1. fails) " rjust

		line from Set1B.sw+(0.0,0.1) to Set1C.ne+(-0.1,0.0) dashed <- thickness 1.5 "(2. sync)" rjust above
		line from Set1B.sw+(0.1,0.0) to Set1C.ne+(0.0,-0.1) dashed -> thickness 1.5 "(3. origin)" ljust below

.ps +2
.PE