The icon for this arc is: Improved Import from AutoCAD The old way of drawing an arc has been renamed to Inscribed Arc, because this arc is defined by a rectangle and two points: the start point and the end point. To finish drawing the arcs, press the Esc key. The first mouse click defines the start point (1), the next click the point (2) through which the arc passes, and the third click the end point (3) of the arc. To start drawing the arc, use the menu command Draw - Arc defined by 3 points or this icon. Using the slider at the top of the window, you can change the size of the symbol previews. In this panel, each symbol displays its name underneath the symbol. Snap can be entered in metric or imperial units, e.g., 4 mm, 0.5', 1/2', etc. If you want to enter the coordinates with units (e.g., '5 cm'), press F12 in the symbol editor, select Symbol and check the box Use units in the Properties panel. This is convenient, because the values can be changed using the mouse wheel.

In the symbol editor, object coordinates are given in tenths of a millimeter. If the page scale is set, the coordinates of objects can be entered in the form number unit or number fraction unit in the Properties panel. In the program settings: F12 - System - Others you can select which units to display:

For mac instal ProfiCAD 12.2.5