OK, I read through the manual and searched the forum and did not find an answer to this, so here goes...

Sec. 5.17, p. 66 of my 2008.1 edition of the manual explains how to randomly present n of N items (as also explained in a thread on the DirectRT forum at http://www.empirisoft.com/Support/showthread.php?t=458). That's all very good, but now suppose I want to combine a randomly selected subset of items with another set of items, all in random order? E.g., we want subjects to first study, say, 100 pictures in random order. Then we want to show a randomly selected 50 of the studied pictures, along with 50 unstudied pictures, in random order, and have subjects indicate which ones they remember from earlier. MediaLab works really well for presenting the trails here so I want to use it instead of my usual programming system, but I don't see how to do this sort of random recombination in MediaLab, and didn't find anything else searching the forum. Would we need DirectRT for this?

Thanks,
-- David McFarlane, Professional Faultfinder