Editing Guide to madagascar programs (section)

===Common parameters===
*<tt>su=</tt> specifies if the input file is SU or SEG-Y. The default is <tt>su=n</tt> (SEG-Y file).
*<tt>read=</tt> specifies what parts of the "Trace Blocks" will be read. It can be <tt>read=d</tt> (only trace data is read), <tt>read=h</tt> (only trace headers are read) or <tt>read=b</tt> (both are read).
*<tt>tfile=</tt> gives the name of the RSF file to which trace headers are written. Obviously, it should be only specified with <tt>read=h</tt> or <tt>read=b</tt>.
*<tt>mask=</tt> is an optional parameter specifying the name of a mask that says which traces will be read. The mask is a 1-D RSF file with integers. The number of mask samples is the same as the number of traces in the unmasked SEG-Y. There should be zeros in the mask in places corresponding to unwanted traces.
*<tt>ns=</tt> specifies the number of samples in a trace. For SEG-Y files, the default is taken from the binary reel header, and for SU files, from the header of the first trace. This parameter is, however, critical enough that a command line override was given for it.
*<tt>verbose=</tt> is the verbosity flag. Can be <tt>y</tt> or <tt>n</tt>.
*<tt>endian=</tt> is a y/n flag (default y), specifying whether to estimate automatically or not if samples in the Trace Data blocks are big-endian or little-endian. Try it if you are in trouble and do not know what else to do; otherwise, let the automatic estimation do its job.