Type   Name   Summary
 Procedure   Val   Converts number strings to integer and floating point values
 Keyword   Var   Starts the definition of a section of data variables
 Type   Variant   A variable type that can hold changing data types
 Function   VarType   Gives the current type of a Variant variable
 Constant   VarTypeMask   Mask for the meta-type part of a Variant variable
 Directive   Virtual   Allows a class method to be overriden in derived classes