Sindbad~EG File Manager

int execute(PDOCDATA, operation);
int silent_step(PDOCDATA,int);
int cogitate(PDOCDATA pDocData, int n, operation *plan, int *flag);
int finish_exec(PDOCDATA,int err, operation op, term next, char *reason);
void embed_comment(PDOCDATA, char *);
int GetTransform(term, term, actualop *, term *, char *);
int think_ahead(PDOCDATA pDocData, operation op, message *msg);
int autoans(term t,int n, term *ans, int *flag);
term flatten(term t);
int finished(PSYMBOLDATA pSymbolData, char *remark, int *percent);
int showstep(PDOCDATA pDocData, char **menuitems, int *nitems, int *indexToHighlight,
  char *finalremark, int maxlength);
int MakeSelectorMenu(PDOCDATA pDocData,char **menuitems, operation *menuops);
char *operator_errmsg(operation op);

typedef struct
   { term arg_answer;
     condition arg_condition;
     char *arg_prompt;
     int index;   /* first variable to show */
   }  get_arg_parameter;