delphi - How the compiler treat procedure/functions inside procedure/functions -

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Some processes or functions are written in a different way, such as: 

  function Foo : Maximum Marks; Var A: string; Process bar; Start A: = '2'; // code end; Start A: = '1'; times; Results: = Streets (A); End;   
 In this example, all variables declared in the FU function can be cut inside bars, how is the context shared?   
 
 
 The calling scope passes through its internal process as a hidden parameter to its frame pointer. The internal process can then use this hidden indicator to access variables in the external process.

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