The language structures in OpenOffice.org BASIC are very similar to those used in
Visual BASIC. The methods used for accessing the underlying documents, however, are
vastly different and have essentially no compatibility with each other. Entire books have been written dealing with the differences between Visual BASIC 6 (VB6), Visual BASIC.NET (VB.NET), and Visual BASIC for Applications (VBA). This chapter is only an overview of issues concerning compatibility between the OpenOffice.org BASIC and Visual BASIC. I use VBA, VB6 and VB.NET to refer to the specific versions and VB to generically refer to either or both versions.
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An important thing to keep in mind is that light intensity can vary significantly within a model. Just like in real-life, if daylight is coming through a window and you look toward it, your eyes compensate for it and adjust. If there are lights on within the room, they can become add less to the overall room brightness if the light coming through the window is too bright. This complex, sometimes subtle, change is taken into account by adjusting the Exposure like an automatic camera. These adjustments take into account over- and under-exposure due to contrasting light intensities.
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