1. Introduction to
OpenSCAD

2. OpenSCAD is maintained by Marius Kintel
About OpenSCAD
OpenSCAD is software for creating solid 3D CAD models. It is free software and available for Linux/UNIX, Windows and Mac OS X.
Unlike most free software for creating 3D models (such as Blender) it does not focus on the artistic aspects of 3D modelling but instead on the CAD aspects.
OpenSCAD uses a type of 3D-compiler that reads in a script file that describes the object and renders the 3D model from this script file. This gives you (the designer) full control over the modelling process and enables you to easily change any step in the modelling process or make designs that are defined by configurable parameters.
OpenSCAD is maintained by Marius Kintel
OpenSCAD is Free Software released under the General Public License version 2.

5. Press F5 to get a graphical preview of what you typed (or press F6 to get a graphical view).
Drag with left mouse button to rotate the view. The bottom line will change the rotate values.
Drag with an other mouse button (or control-drag under OSX) to translate (move) the view. The bottom line will change translate values.
Use the mouse scroll to zoom in and out. Alternatively you can use the + and - keys, or right-drag with the mouse while pressing a shift key (or control-shift-drag under OSX). The Viewport line at the bottom of the window will show a change in the distance value.

6. Simple three-dimensional objects form the basis of Constructive Solid Geometry