<html> <head> <style></style> </head> <body class='hmmessage'> Dear all, I have two problems with the definition of the windows.   1) I want to import my optical properties from Window 5, but I had some problems. I created my window and I calculated optical properties. Now I have to save a file that I must load in ESP-r. So I have 3 possibilty for saving my optical properties and I don't know which to choose to load it on ESP-r:  a) detailed b) DOE-2 c) Energy Plus  I already tried to uload these file, but ESP-r doesn't update the file "detailed"  and the file "Energy Plus". ESP-r loads DOE-2 but the loading is not complete because it stops. What is the procedure to load my window file? What kind of window file do I save?   2) I want to study summer behavior of my climate zone contemplating two different solutions:        a) open window        b) closed window  So I impose in "WINDOW surface air leakage": open or closed, but after the two different simulation I get the same result, that is the result of the area with the windows closed. How can I contemplate the windows open?   Thanks   Regards   Nicola Della Grazia </body> </html>