<defaults>/ txcolor = (white)</defaults><expt>/ blocks = [1=b1]</expt><block b1>/ screencolor = (black)/ trials = [1=p1]</block><surveypage p1>/ caption = "Page"/ questions = [1=q1]/ showpagenumbers = false</surveypage><checkboxes q1>/ caption = "Question"/ options = ("Option A", "Option B", "Option C")</checkboxes>
<defaults>/ txcolor = (black)</defaults><expt>/ blocks = [1=b1]</expt><block b1>/ screencolor = (white)/ trials = [1=p1]</block><surveypage p1>/ caption = "Page"/ questions = [1=q1]/ showpagenumbers = false</surveypage><checkboxes q1>/ caption = "Question"/ options = ("Option A", "Option B", "Option C")</checkboxes>
<defaults>/ txcolor = (white)</defaults><expt>/ blocks = [1=b1]</expt><block b1>/ screencolor = (grey)/ trials = [1=p1]</block><surveypage p1>/ caption = "Page"/ questions = [1=q1]/ showpagenumbers = false</surveypage><checkboxes q1>/ caption = "Question"/ options = ("Option A", "Option B", "Option C")</checkboxes>