Use the Open command to call up an existing drawing so that you can continue working on it.
Access existing drawings using Open and the Select File dialog box.
On the Application menu, click Open (Figure 1-36), then click Drawing.
The Select File dialog box appears (Figure 1-37).
Click the Views option at the top of the Select File dialog box and click the Thumbnails and Preview options.
Thumbnails of the drawing files appear.
Click the desired file.
A preview appears.