/* error definitions. */
#define PROGSTA_PROMPT_MODE    -1
#define PROGERR_UNKNOWN_COMMAND  1001
#define PROGERR_NO_QUOTATION     1002
#define PROGERR_QUOTE_NOT_CLOSED 1003
#define PROGERR_OUT_OF_RANGE     1004
#define PROGERR_QUOTE_TOO_LONG   1005

/* prototypes. */
Int ExecProgram(Char**);