Displays a list of the drawings you select and lists the available symbols or blocks in each. You can compile a list of symbols and assign them to class definitions.

Displays the drawing or drawings that contain the symbols you want to add.
Displays a list of blocks contained in the selected drawing.
Lists the blocks you have selected.
Adds one or more blocks to the Selected Blocks list.
Removes one or more blocks from the Selected Blocks list.
Displays the selected block.