print ([[

File format for option -offsetfile:

The file supplied to option -offsetfile defines a mapping table named
``offsets''. It maps the sequence-regions given in the GFF3_file to offsets.
It can be defined as follows:

offsets = {
  chr1  = 1000,
  chr2  = 500
}

When this example is used, all features with seqid ``chr1'' will be offset by
1000 and all features with seqid ``chr2'' by 500.

If -offsetfile is used, offsets for all sequence-regions contained in the given
GFF3 files must be defined.]])
