Chapter 26 Introduction to Dynamic Blocks 807 Copyright Goodheart-Willcox Co., Inc. Figure 26-31. A—Inserting a linear parameter to use with an array action for the chairs. B—Inserting a linear parameter to stretch the table. C—Assigning a stretch action to the linear parameter. When you specify the crossing window, be sure to include the CHAIR ARRAY parameter grip in the frame. Start point Start point Endpoint Endpoint Linear parameter Chain symbol Stretch frame Include this parameter grip in the stretch frame A B C Select objects