Indentation Errors

Not starting every line at the same column:

  x := 1
   y := 2
  z := 3

Not indenting a nested instruction sequence:

  repeat
  get x
  put x
  loop

Not outdenting after a nested instruction sequence:

  if x
    y := 1
    end

This is Slim documentation as snarfed on 27 May 1999 by dB.