ManageData(cols, vars, parent = NULL)cols and vars components of
Data. The cols object is a list whose length is equal to
the current number of data variables. Each component in cols is linked
to a specific variable, and contains the following components:name and unit.data.raw data frame (see ImportData).SummarizeData).vars object is a list with components:cols.EditFunction); and
(3) remove and (or) reorder variables in the data table.EditFunction