:up: But you could use 'on', in an appropriate context. For example 'On this slide I've listed...'. In this case, the on really does refer to what's on the slide. This would be even more appropriate if you were not sure what was on the slide, and you held it up like a newspaper (so that only you could see it - emphasizing the role of what was on its surface - before putting it on the OHP.
Of course, it'd be preferable (in my opinion) to dispense with prepositions altogether, and just say 'This slide lists all the ...'. ;-)
b
b