This option is used with the command eval and defines a column in a chart. It
defines the number of the column, the type of the column and depending on the
type additional parameters.

There are three column types defined:

* the type simulation-parameter (abbreviated with sp) denotes a simulation
  parameter which is listed in this column. The parameter is the name
  of the simulation parameter,

* the type result-path (abbreviated with rp) denotes a result path for
  the column. The parameter is the result path (which may reference
  more result pathes)

  When using a match group in a result path (see help for the result-path option)
  then instead of the value associated with the result path the extracted
  value from the match group is listed in the column.

* the type batch-number (abbreviated with bn) will list the batch number
  in the column (only valid when the --batches Option is given). This
  type has no parameters. Only default batches will be handled.

* the type drop-number (abbreviated with dn) will list the drop number
  in the column (only valid when the --drops Option is given). This
  type has no parameters.
