Fileformat property - Excel VBA

[baltaone]

Can someone tell me the difference between the following XlFileFormat constants:

xlTextMSDOS
xlTextPrinter
xlTextWindows
xlUnicodeText

I am saving an excel spreadsheet using:
ActiveWorkbook.SaveAs Filename:="C:test.txt", FileFormat:= _
xlTextPrinter, CreateBackup:=True

Problem - The resultant file has the rows from the spreadsheet wrapped. Does xltxtprinter have some default linesize? WIll one of the other formats correct this?

Thanks