What is the 'table' sub-parameter under 'levels'?

Specifies the forecast input table for this level of the hierarchy. Alias: inputTable. The castable value can be one or more of the following:
- caslib (string): Specifies the caslib for the input table. By default, the active caslib is used.
- computedOnDemand (TRUE | FALSE, Default: FALSE): When set to True, creates the computed variables when the table is loaded instead of when the action begins. Alias: compOnDemand.
- computedVars (casinvardesc): Specifies the names of the computed variables to create. Specify an expression for each variable in the computedVarsProgram parameter. Alias: compVars.
- computedVarsProgram (string): Specifies an expression for each computed variable that you include in the computedVars parameter. Alias: compPgm.
- dataSourceOptions (key-1=any-list-or-data-type-1): Specifies data source options. Aliases: options, dataSource.
- groupByMode ("NOSORT" | "REDISTRIBUTE", Default: NOSORT): Specifies how to create groups. "NOSORT" groups data without sorting on each machine, then groups again on controller. "REDISTRIBUTE" transfers rows between nodes, guaranteeing ordering but is slower.
- importOptions: Specifies the settings for reading a table from a data source. Alias: import.
- name (table-name): Specifies the name of the input table.
- singlePass (TRUE | FALSE, Default: FALSE): When set to True, does not create a transient table on the server. Can be efficient, but data might not have stable ordering upon repeated runs.
- vars (casinvardesc): Specifies the variables to use in the action.
- where (where-expression): Specifies an expression for subsetting the input data.
- whereTable (groupbytable): Specifies an input table that contains rows to use as a WHERE filter.