Hello, I want to realize the control of screen according to the lux level in a room. Now on the website of <a href="http://www.esru.strath.ac.uk/Courseware/ESP-r/ex_furt_sim.htm">http://www.esru.strath.ac.uk/Courseware/ESP-r/ex_furt_sim.htm</a> I found a similar function of lighting and blind control.   In the page, it says " choose "lighting and blind control" from the "zone definition" menu. But there is only a "zone composition" menu instead of  "zone definition" menu in the Esp-r 11.5 on my computer. And there is no "lighting and blind control" in "zone composition" menu, either. So where should I find this function?   I tried to click the link of " see on-line tutorial for details", but an error page came out. Why? I want to read this tutorial very much!   Has anyone used a similar function before?   Thank you very much! -- Best regards! Chunying