4  Pascal User Manual  Figure O.a  Syntax diagram for  Program  Identifier  l--o;M  )--------:r-----~  Unsignedinteger  1--------".  }------=-J  Identifier  I----+{  )------l~  Constant  }-------:;,........ .. IIdentifier  1----.-(  }---=----:::;r-+lIdentifier  1--....... -<  end )--- Figure O.b  Syntax Diagram for  Block 