ReadonlyidIdentifies the filler. Must be unique among the fillers in use.
This is what names the fill in a menu, survives into a transaction's ITransaction.Operation.params, and lets a script ask for a fill type by name — so it is a stable key, not a display label.
Create a IAutoFill.FillAt function using the provided values and options.
Claims everything up to the last value that is not blank.
The Copy Filler 'copies' values in a repeating pattern.
Remarks
This the default Filler when non is specified or no filler accepts the values being provided.