Exclusive or. `A xor B' means
`A or B, but not both'. "I want to get cherry pie xor a banana
split." This derives from the technical use of the term as a
function on truth-values that is true if exactly one of its two
arguments is true.
munching squares n.
A display hack dating back to the
PDP-1 (ca. 1962, reportedly discovered by Jackson Wright), which
employs a trivial computation (repeatedly plotting the graph Y = X
XOR T for successive values of T -- see HAKMEM items
146-148) to produce an impressive display of moving and growing
squares that devour the screen....
munching squares: n. A {display hack} dating back to the PDP-1
(ca. 1962, reportedly discovered by Jackson Wright), which employs
a trivial computation (repeatedly plotting the graph Y = X XOR T
for successive values of T --- see {HAKMEM} items 146--148) to
produce an impressive display of moving and growing squares that
devour the screen....