Wanted: Adding list-elements into an existing list

[Nordlöw]

Is there a variant of the function add-to-list(a b) where b can be a
list aswell?

(add-list-elements-to-list '(a b c) '(c d e)) should evaluate '(a b c
d e)

or do I have to implement it myself using an iteration-construct?

/Nordlöw