{    The purpose of this command is to allow the user to name a counter, descriptive
{ data field, or header field associated with a record.  Parameters are also
{ available that modify the value of the raw data to be used as the value of
{ the field (incremental, multiplier).  These named fields can be referred to
{ in the 'put_field_summary', 'put_interval_field', and 'put_field' report
{ specification commands.
{
{ FIELD:  This parameter is the name of the specified data item.  It must be a
{       valid SCL name.
{
{ SELECTION:  This parameter specifies the record the field is to be taken from.
{       Valid values for this parameter are selection names (SCL name).  If the
{       selection has not been defined, ANABL will issue an error.  In this case,
{       the field will not be defined.
{
{ COUNTER:  This parameter specifies which counter of the named record to use
{       for this field.  Either this parameter or the text parameter must be
{       non-null.  A value of NONE means a counter is not specified.  The
{       current maximum counter number is 255.
{
{ TEXT:  This parameter specifies a string to be named.  Most often this will
{       be used to name the descriptive data field or a substring of the
{       descriptive data field.  Either the text parameter or the counter
{       parameter must be specified.
{
{ MULTIPLIER:  This parameter specifies an integer to be used as a multiplier
{       for all values of the field.  To specify a divisor, you may either
{       specify the decimal ptc$fraction, (i.e. a divisor of 1000 is a multiplier
{       of .001) or you may specify the real expression (i.e. 1/1000).
{
{ INCREMENTAL:  This parameter specifies how field values are to be calculated.
{       If 'incremental' is false, then the value of the field is just as it is
{       found in the counter.  If 'incremental' is true, then the value of the
{       field is computed by subtracting the values of consecutive occurrences
{       of the counter and using this result as the value.
{
{ STATUS: This parameter specifies the request status.
{       CONDITIONS:
{             pte$counter_and_text
{             pte$not_counter_and_text
{             pte$redefined_field
{             pte$undefined_selec_for_field
