[Explanation]
(1)
When the move is executed, it is moved to just before the move destina-
tion step.
(a) If the move destination is before a movement source, instructions in
the range from
the
movement destination to the movement source
are shifted in descending
order.
The figure below is an example of shifting ladder Mock D before
ladder block B.
Before executing
After executing
the move
the move
A
A
C
B
E
E
B
-
~~~~~
}
-
C
I
I
(b) When a move destination is after a movement source, instructions
in the range from the move destination to the movement source are
shifted in ascending order.
The figure below is an example of shifting ladder block
B before
ladder block E.
6 - 2 4