Hi,
1) The native Mach Toolpath will always display in the upper depth.
What you can do is use "local connection" to communicate to a external swf.
2) To create your own Gcode you can either tap in to "Display.dll" or load the Gcode in to a list component or data grid and use "current line".
3) We are working on documentation and adding new features in Flash for Mach4.