Middle Moves

[byu]

How do you determine what is "clockwise" for M, S, and E moves? Is M looking from the right clockwise or from the left? Is S from the front or back? E from top or bottom? If someone could give me a clear explanation on how M, S, and E work, that would be great!

 

[IamWEB]

M' is pushing away from you, M is toward. I'm not completely sure of the logic behind it, however.

 

[byu]

What about E and S? I only know about them because I've seen them on Cubefreak (Macky's site)

 

[daniel0731ex]

F, U, and R

 

[Ton]

From the WCA regulation (always a good place to check first):
Article 12: Notation
Middle Slice Moves (middle slice of puzzles with odd number of slices, middle two slices of puzzles with even number of slices):
12a13) Clockwise, 90 degrees: M (same direction as L), S (same direction as F), E (same direction as D). (see 12a1).
12a14) Counter clockwise, 90 degrees: M', S', E' (see 12a13).
12a15) Clockwise, 180 degrees: M2, S2, E2 (see 12a13).
12a16) Counter clockwise, 180 degrees: M'2, S'2, E'2 (see 12a13).