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  Argument
 
    identifier    Name of a variable or data type
 
  Returns
 
    Word          Number of bytes occupied in memory by the argument
 
  Description
 
    The SizeOf function returns the amount of memory in bytes used by a
    specific variable or a data type.
 
    The identifier argument is the name of any variable or type,
    whether defined in the program, the language, or a standard unit.
 
    Use SizeOf to prevent overwriting memory when the FillChar,
    FreeMem, GetMem, and Move procedures are used. Use SizeOf along
    with the MaxAvail procedure to ensure that GetMem or New do not
    generate a run-time error because of insufficient memory to
    allocate a variable.
 
    To get the size of the memory area pointed to by a typed pointer,
    pass the pointer dereferenced by a caret, (^):
 
       result := SizeOf( pointer_variable^ );