## File support

Opening and closing an output file is done thanks to the ClassFileOut class, e.g.

    fileout = pyclassfiller.ClassFileOut()
    fileout.open(file='foo.30m',new=True,over=True,size=10000,single=True)
    fileout.close()
    del fileout

The above example creates a new and empty Class file named foo.30m. The open() and close() methods are described in details in Appendix . As in the CLASS program (LASFILE OUT), there can be only 1 output file opened at the same time.