The DEEK() function returns the content of the specified memory address plus one, as a 16-bit WORD. The return value is a number between 0 and 65535.

DECLARE FUNCTION DEEK AS WORD (address AS WORD) SHARED STATIC INLINE
' MEGA65 only
DECLARE FUNCTION DEEK AS WORD (address AS LONG) OVERLOAD SHARED STATIC INLINE  

POKE $C000, $AB ' write value lo byte
POKE $C001, $CD ' write value hi byte
PRINT DEEK($C000) ' outputs 52651 (decimal for $CDAB)