<div dir="ltr"><span tabindex="-1" id="result_box" class="" lang="en"><span>Have</span> you <span>ever used</span> <span>the</span> <span>virtual</span> <span>surface</span> <span>in</span> <span>sketchup</span> of <span>TRNSYS</span> <span>17</span><span>?</span></span></div>