<HTML dir=ltr><HEAD> <META http-equiv=Content-Type content="text/html; charset=unicode"> <META content="MSHTML 6.00.6000.16890" name=GENERATOR></HEAD> <BODY> <DIV><FONT color=#000000> <DIV><FONT face=Arial color=#000000 size=2>Hi all!</FONT></DIV> <DIV><FONT face=Arial size=2></FONT> </DIV> <DIV> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><FONT face=Arial size=2>In page 42 from the Cookbook (latest version) it says:</FONT></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" /><o:p><FONT face=Arial size=2> </FONT></o:p></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><FONT face=Arial size=2>"A recent addition to ESP-r is the concept that surfaces have a usage attribute (Figure 2.23). Code compliance tasks are assisted if we identify<SPAN style="mso-spacerun: yes">  </SPAN>the WINDOW as a code compliant facade. Work is underway to use these<SPAN style="mso-spacerun: yes">  </SPAN>usage attributes when exporting ESP-r models. A future version of ESP-r will also make use of an opening type attribute (Figure 2.25) to help form air flow network (currently they are only used for documentation)."</FONT></P></DIV> <DIV><FONT face=Arial size=2></FONT> </DIV> <DIV><FONT face=Arial size=2>My question is what are the differences between the options in Figure 2.23 (usage attributes)? Where i can found more information about this? The help button (?) it is not a help for this case... And i have the same doubt for the door usages...</FONT></DIV> <DIV><FONT face=Arial size=2></FONT> </DIV> <DIV><FONT face=Arial size=2>Finally, the opening type attribute is now implemented (i'm using Linux version 11.7)? Or it still used for documentation?  </FONT></DIV> <DIV><FONT face=Arial size=2></FONT> </DIV> <DIV><FONT face=Arial size=2>Thanks, in advance, for your help.</FONT></DIV> <DIV><FONT face=Arial size=2></FONT> </DIV> <DIV><FONT face=Arial size=2>Regards,</FONT></DIV> <DIV><FONT face=Arial size=2></FONT> </DIV> <DIV><FONT face=Arial size=2>Paulo Tavares</FONT></DIV></FONT></DIV></BODY></HTML>