11.2.13 List Processing

?T =.. ?L   ISO

the functor and arguments of term T comprise the list L

append(?A,?B,?C)

the list C is the concatenation of lists A and B

keysort(+L,-S)

the list L sorted by key yields S

length(?L,?N)

the length of list L is N

member(?X,?L)

X is a member of L

memberchk(+X,+L)

X is a member of L

nonmember(+X,+L)

X is not a member of L

sort(+L,-S)

sorting the list L into order yields S