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Syntax diagram example ANTLR → railroad diagram
Input
expr
  : term
  | expr '+' term
  | expr '-' term
  ;
→
term expr '+' term expr '-' term
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Flowchart example C# → flowchart
Input
public int Max(int a, int b)
{
  if (a > b)
    return a;
  return b;
}
→
Max if (a > b) T F return a; return b;
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