density
    Function
    Description
density produces a density plot of a nuleotide sequence.
    Usage
    Command line arguments
    Input file format
density reads one or more nucleotide sequences.
    Output file format
density 
outputs a graph to the specified graphics device. 
    Data files
None
    Notes
None.
    References
None.
    Warnings
None.
    Diagnostic Error Messages
None.
    Exit status
It always exits with status 0.
    Known bugs
None.
    Author(s)
    History
    Target users
    Comments