typedef struct {
    char *sc_name;		/* Subcommand name */
    char *sc_doc;		/* One line documentation */
    void (*sc_routine)();	/* Routine to call on command */
    word sc_arg;		/* Argument to routine */
} subcommand;

typedef struct _st_comd {
    struct _st_comd *c_next;	/* Link to next command */
    char *c_name;		/* Name of command */
    char *c_doc;		/* One line documentation on command */
    subcommand *c_scmds;	/* Array of subcommands */
} command;