---input
arguments:   string1  = character array to move string from
(character)
k1       = position of first character in string to be
moved
(integer)
n        = number of characters in string to be moved
(integer)
k2       = position of first character in string2 where
the string is to be inserted
(integer)

---output
arguments:   string2  = character array into which the string was
inserted
(character)