The buttons in the Draw Tools toolbar found in the Symbol Editor are described below:

Button Description
Select button. Use to select element(s) on the workspace.
Rectangle button. Places a rectangle on the workspace.
Line button. Places a line on the workspace.
Circle button. Places a circle on the workspace. Click to place the center of the circle, then move the cursor on the workspace. As you move the cursor, a dotted outline of the circle appears. When the circle is the desired shape and size, click to place it on the workspace.
Ellipse button. Places an ellipse on the workspace. Click to place the center of the ellipse, then move the cursor on the workspace. As you move the cursor, a dotted outline of the ellipse appears. When the ellipse is the desired shape and size, click to place it on the workspace.
Multiline button. Places a multiline on the workspace.
Polygon button. Places a polygon on the workspace.
Half Ellipse Arc button. Places a half ellipse arc on the workspace.
Segment Arc button. Places an arc on the workspace. Click once to place the center point of the arc, click again to place the out diameter point. As you move the cursor, a dotted outline of the arc appears. Move the cursor and click to place the arc's end point.
Bezier button. Places a Bezier curve on the workspace. Click to place the start of the curve, then move the cursor on the workspace. As you move the cursor, a dotted outline of the Bezier curve appears. Click to place the end point of the Bezier, then move and click the cursor twice more to form the final shape of the Bezier.
Text button. Displays the Enter Text dialog box, where you enter and format text to be placed on the workspace.
Bitmap button. Places a bitmap image on the workspace. Click to display a standard Windows “Open” dialog box, where you can select the desired bitmap.
Check Symbol button. Confirms that the symbol has no errors, such as duplicate pin names.