Copyright Goodheart-Willcox Co., Inc. 382 AutoCAD and Its Applications—Advanced In the Source Geometry area of the dialog box, you can specify which geometry is included in the section. Picking the Include all objects radio button includes all 3D solids, surfaces, and regions in the section. To limit the section to certain objects, pick the Select objects to include radio button. Then, pick the Select objects button, select the objects on-screen, and press [Enter]. The number of selected objects is then displayed in the dialog box. The Destination area of the dialog box is where you specify how the section will be placed. To place the section into the current drawing, pick the Insert as new block radio button. To update an existing section block, pick the Replace existing block radio button. Then, pick the Select block button, select the block on-screen, and press [Enter]. You will need to do this if the section object is changed. To save the section to a fi le for use in other drawings, pick the Export to a file radio button. Then, enter a path and fi le name in the text box. Once all settings have been made, pick the Create button. The section is attached to the cursor and can be placed like a regular block. See Figure 14-44. Additionally, the options available are the same as if a regular block is being inserted. Once the block is inserted, it can be moved, rotated, and scaled as needed. Section Settings Picking the Section Settings… button at the bottom of the Generate Section/ Elevation dialog box opens the Section Settings dialog box discussed earlier. Using this dialog box, you can adjust all of the properties associated with the type of section being created. Depending on whether the 2D Section/Elevation or 3D Section radio button is selected in the Generate Section/Elevation dialog box, the appropriate categories and properties are displayed in the Section Settings dialog box. Refer to Figure 14-40. The categories discussed earlier in relation to the Live Section settings radio button are available. Also, two additional categories are displayed for 2D and 3D sections: • Background Lines. Available for 2D and 3D sections. • Curve Tangency Lines. Only available for 2D sections. Pick 2D or 3D Select objects to include Select where the section will be placed Pick to expand or collapse the dialog box Figure 14-43. The expanded Generate Section/ Elevation dialog box.