Palladio's elaboration of this, normally used in a series, places a larger or giant order in between each window, and doubles the small columns supporting the side lintels, placing the second column behind rather than beside the first. This was in fact introduced in the Biblioteca Marciana in Venice by Jacopo Sansovino (1537), and heavily used by Palladio in the Basilica Palladiana in Vicenza, where it is used on both storeys; this feature was less often copied. Here the openings are not strictly windows, as they enclose a loggia. Pilasters might replace columns, as in other contexts. Sir John Summerson suggests that the omission of the doubled columns may be allowed, but the term "Palladian motif" should be confined to cases where the larger order is present.