#define PPTK_SEMI                             1
#define PPTK_APPLY                            2
#define PPTK_COMMA                            3
#define PPTK_AND                              4
#define PPTK_TRUE                             5
#define PPTK_FALSE                            6
#define PPTK_ID                               7
#define PPTK_LP                               8
#define PPTK_RP                               9
#define PPTK_OPAQUE                          10
#define PPTK_EXCLAIM                         11
#define PPTK_VARIABLE                        12