diff --git a/plantStructC4.adoc b/plantStructC4.adoc
index 5a187c3..eea6a90 100644
--- a/plantStructC4.adoc
+++ b/plantStructC4.adoc
@@ -6,12 +6,29 @@
 
 Open Online PlantUML Server: http://www.plantuml.com/plantuml/uml/SyfFKj2rKt3CoKnELR1Io4ZDoSa70000 
 
-Opens with a one-arrow sequence diagram in text form
+Opens with a one-arrow UML sequence diagram in text form
 
  @startuml
+ Bob -> Alice : hello
+ @enduml
+ 
+Shows the graphic form at the bottom of the form
+
+<?xml version="1.0" encoding="UTF-8" standalone="no"?><svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" contentScriptType="application/ecmascript" contentStyleType="text/css" height="161px" preserveAspectRatio="none" style="width:181px;height:161px;" version="1.1" viewBox="0 0 181 161" width="181px" zoomAndPan="magnify"><defs><filter height="300%" id="f1sm7vr2xouy4p" width="300%" x="-1" y="-1"><feGaussianBlur result="blurOut" stdDeviation="2.0"/><feColorMatrix in="blurOut" result="blurOut2" type="matrix" values="0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 .4 0"/><feOffset dx="4.0" dy="4.0" in="blurOut2" result="blurOut3"/><feBlend in="SourceGraphic" in2="blurOut3" mode="normal"/></filter></defs><g><line style="stroke:#A80036;stroke-width:1.0;stroke-dasharray:5.0,5.0;" x1="28" x2="28" y1="40.2969" y2="118.5625"/><line style="stroke:#A80036;stroke-width:1.0;stroke-dasharray:5.0,5.0;" x1="144" x2="144" y1="40.2969" y2="118.5625"/><rect fill="#FEFECE" filter="url(#f1sm7vr2xouy4p)" height="30.2969" style="stroke:#A80036;stroke-width:1.5;" width="43" x="5" y="5"/><text fill="#000000" font-family="sans-serif" font-size="14" lengthAdjust="spacing" textLength="29" x="12" y="24.9951">Bob</text><rect fill="#FEFECE" filter="url(#f1sm7vr2xouy4p)" height="30.2969" style="stroke:#A80036;stroke-width:1.5;" width="43" x="5" y="117.5625"/><text fill="#000000" font-family="sans-serif" font-size="14" lengthAdjust="spacing" textLength="29" x="12" y="137.5576">Bob</text><rect fill="#FEFECE" filter="url(#f1sm7vr2xouy4p)" height="30.2969" style="stroke:#A80036;stroke-width:1.5;" width="49" x="118" y="5"/><text fill="#000000" font-family="sans-serif" font-size="14" lengthAdjust="spacing" textLength="35" x="125" y="24.9951">Alice</text><rect fill="#FEFECE" filter="url(#f1sm7vr2xouy4p)" height="30.2969" style="stroke:#A80036;stroke-width:1.5;" width="49" x="118" y="117.5625"/><text fill="#000000" font-family="sans-serif" font-size="14" lengthAdjust="spacing" textLength="35" x="125" y="137.5576">Alice</text><polygon fill="#A80036" points="132.5,67.4297,142.5,71.4297,132.5,75.4297,136.5,71.4297" style="stroke:#A80036;stroke-width:1.0;"/><line style="stroke:#A80036;stroke-width:1.0;" x1="28.5" x2="138.5" y1="71.4297" y2="71.4297"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacing" textLength="30" x="35.5" y="66.3638">hello</text><polygon fill="#A80036" points="39.5,96.5625,29.5,100.5625,39.5,104.5625,35.5,100.5625" style="stroke:#A80036;stroke-width:1.0;"/><line style="stroke:#A80036;stroke-width:1.0;" x1="33.5" x2="143.5" y1="100.5625" y2="100.5625"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacing" textLength="92" x="45.5" y="95.4966">greetings, Bob</text><!--MD5=[5bdeec63f98b6f27bc4a1052ae904406]
+@startuml
 Bob -> Alice : hello
+Bob <- Alice : greetings, Bob
 @enduml
 
+PlantUML version 1.2021.4beta2(Unknown compile time)
+(GPL source distribution)
+Java Runtime: Java(TM) SE Runtime Environment
+JVM: Java HotSpot(TM) 64-Bit Server VM
+Default Encoding: UTF-8
+Language: en
+Country: US
+--></g></svg>
+
 https://plantuml.com/
  <= home page, PlantUML +
 https://crashedmind.github.io/PlantUMLHitchhikersGuide/