We are in the process of developing a Java based Capsim Topology Drawing Application. We call it DrawTopology. With this tool, you can Graphically Visualize the Block Diagram. The tool will automatically create a graphical block diagram from a Capsim® text topology file. As you edit the text file adding blocks and connections in Capsm®TMK, you can save it and see your changes graphically in a Java Scrollable Window ( Automatically Generated from Text Topology File).
While we will not support graphical editing of the block diagram with this tool at this time (see Capsim® QT) it is a super efficiency enhancement tool working with Capsim®TMK.