functionDefn — Defines a function by associating a table with other information
functionDefn :  [name]
     (griddedTableRef | griddedTableDef | griddedTable | ungriddedTableRef | ungriddedTableDef | ungriddedTable)A functionDefn defines how function is represented in one of two possible ways: gridded (implies breakpoints) or ungridded (with explicit independent values for each point).
griddedTableRef
 | 
griddedTableDef
 | 
griddedTable
 | 
ungriddedTableRef
 | 
ungriddedTableDef
 | 
ungriddedTable
 | 
2011-03-25