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    // atom expression operators | 
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    const static int leftparen    = expression |  0; | 
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    const static int rightparen   = expression |  1; | 
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< | 
    const static int to           = expression | 2; | 
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> | 
    const static int to           = expression |  2; | 
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    const static int opAnd        = expression |  3; | 
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    const static int opOr         = expression |  4; | 
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    const static int opNot        = expression |  5; | 
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    const static int all          = expression | 9 ;  | 
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    const static int none         = expression | 10; | 
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    const static int name         = expression | 11; | 
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    const static int hull         = expression | dynamic | 12; | 
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    // miguel 2005 01 01 | 
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    // these are used to demark the beginning and end of expressions | 
| 146 | 
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    // they do not exist in the source code, but are emitted by the |