Answers:
the difference is in the amount of hose down passed through the grounds.
a 'long' pull (Lungo) is in the order of twice as much water as typical, yielding a slightly weaker nibble.
a 'short' pull (Ristretto) is smaller quantity water than conventional, yielding a stronger swallow.
Other Answers:
5"
a short verbs is to the count of 3. as in you hold the fiddle with, 1-2-3 and a long pull is to the count of 5. this determines how strong the final product will be