DELPHI: Constants
 

• This is a value that stays the same throughout a program.
• Constant declarations are done just above the var declaration (globally or locally ? most often globally).
• The data type does not need to be indicated.
• Declare a constant by using the reserved word const followed by the identifier (the name of the constant), an equal sign and then the value. For example:

const
  sTown = 'Sasolburg';
  rRate = 0.3256;