This function allows the user to extend a line by a specified distance from the selected endpoint of a line.

·          Select a line from the display area using mouse cursor.

Click the right button to reject the selection.

·          Select one endpoint of the selected line.

Click the right button to reject the selection.

·          Enter a real number as the extended length in the Extend Length dialog box as illustrated in Figure 5.1.24.

The specified extension can be previewed.

Figure 5.1.24  Extended Length dialog box