peek skeleton ptr fills the
skeleton with data read
from memory beginning at
ptr. The skeleton is needed formally
for using
Traversable. For instance when reading a list, it is
not clear, how many elements shall be read. Using the skeleton you can
give this information and you also provide information that is not
contained in the element type
a. For example you can call
peek (replicate 10 ()) ptr
for reading 10 elements from memory starting at
ptr.