VB6's two floating point types are called Single and Double. Learn what distinguishes Single from Double, and find out when you would be wise to use Double instead of Single in your programs.

VB6 makes use of collections in many ways, such as keeping track of controls on a form and system printers. Learn how to create a Collection object, as well as how to use the Add method to add items to the collection.

A user defined type (UDT) is a Visual Basic technique for defining a data type that exactly meets the needs of your program.