Type   Name   Summary
 
 Compiler Directive   $O   Determines whether Delphi optimises code when compiling
 Compiler Directive   $Optimization   Determines whether Delphi optimises code when compiling
 Compiler Directive   $OverFlowChecks   Determines whether Delphi checks integer and enum bounds
 Keyword   Object   Allows a subroutine data type to refer to an object method
 Function   Odd   Tests whether an integer has an odd value
 Keyword   Of   Linking keyword used in many places
 Keyword   On   Defines exception handling in a Try Except clause
 Keyword   Or   Boolean or or bitwise or of two arguments
 Function   Ord   Provides the Ordinal value of an integer, character or enum
 Directive   Out   Identifies a routine parameter for output only
 Variable   Output   Defines the standard output text file
 Directive   Overload   Allows 2 or more routines to have the same name
 Directive   Override   Defines a method that replaces a virtual parent class method