Wait until you see the "Ready..." Message on the Applet canvas.
Open your ANSI file with a text editor and copy the the text in the textbox on this page. NOTE: Works only with texteditors which didn't kill the control characters (plain text
editor). If you run windows, the standard editor (Windows/Notpad.exe) can be used.
Press the paint button and wait a moment.
The applet should start to display your ANSI now.
(only standard ESCSequences are supported)