AC3D is a 3D design program and scenery all kinds of objects with which you will be able to create models. They can be seen as the use of OpenGL.
AC3D is the main feature of this type of 3D Studio, lightwave, Povray or other 3D modeling programs as LDraw, is its compatibility. It thus can not import and export formats used by these programs.
AC3D you limit the number of polygons and vertices, which lets you edit the line. This is a single vertex or group of vertices can execute up to six different operations.
Plus, AC3D using masrnayana impact on their borders can be applied to soften the image; Model Render, including their posture; Up to seven different light emergence, etc.