What I need to do is choose two people at random from six that participants enter at beginning of the experiment. They fill out further questionnaires about just these two, and not all six.

The way I'm solving that problem (unless you have a better suggestion), is by having six fill-in-the-blank variables that are presented in random order in the first questionnaire. From the participant's perspective, they are all exactly the same. That way I can have MediaLab always inserting fill-in-the-blank information from the same variable in later questionnaires, but I avoid order effects by having the people entered in a random order.

Here's my question. I want to make sure participants enter a new person in each of the six blanks. I'd like to display what they've already entered, but, since the variables are being presented randomly, there are always blank variables. MediaLab presents those as <variablename>, but I'd just like them to be blank. Is there any way to do that?