This is the name of the debug output file. Under DOS, Windows, or OS/2, this file is created in the root of c:\. For UNIX and Mac versions, it is put in the current directory. The debug output will be put in this file, appended to whatever the file already contains. When trying to debug your program, delete this file first, run your program, then read the file to see what information it provides. Even if this information is not enough for you to fix the problem, it will be helpful to us, so include it when you contact Nombas for technical support.