Several classes exist in a single-precision (Single) version and a double-precision (Double) version. Single-precision types have the postfix F. Double-precision types have the postfix D. To simplify the diagrams the members of the double-precision types are hidden if there is an equivalent single-precision type. (For example: In the class diagram the members of Vector3F are shown. The members of Vector3D are hidden because they are similar.)

To make the class diagrams easier to understand the diagrams show only the important type members. Following members are typically hidden:

• constructors,
• private or internal members,
• members that are only for internal use,
• overridden members.