How to Draw an Initial Polygon

  1. Select the Design window (F4).
  2. Select Design\Draw Initial Polygon.
  3. Click in the Design window at the location of the first point.
  4. Move the mouse to draw an edge of the polygon.
  5. Each subsequent click of the mouse will plot a new vertex of the polygon.
  6. You can show a grid while designing the polygon by pressing ctrl-G. If you want to set your own grid size, you must do this before selecting the menu item to draw the initial polygon. You have the option to specify a different grid size for each axis. When a grid is displayed, holding down the shift key while clicking the mouse will snap the vertex to the nearest corner on the grid. Use the plus and minus keys to rotate among the four grid sizes (0.05, 0.1, 0.125, 0.25). If you have created a grid with unequal scale along the x and y axes, then pressing the plus or minus key will convert back to a square grid. The plus key will use the larger grid value while the minus key will use the smaller grid value.
  7. The cursor will change to a crosshair when the mouse is close to the initial vertex. A click in that case will use the initial vertex.
  8. Pressing "D" will delete the last vertex if you change your mind.
  9. Pressing "L" while you are drawing the polygon allows you to "lift" the pen so that you can start a new polygon with the next click.
  10. Press "Q" after you have chosen the last vertex, or double click the mouse when you are done.
  11. If you want to save your polygon, select File\Save Initial Polygon.