<html><head><style type="text/css"></style></head><body><div style="font-family:times new roman,new york,times,serif;font-size:12pt"><div>system operation: windows vista<br><br>i have been install ESP-r BETA version. i use to design single story building. i want to know why when i add door on the wall then other point on surface appear for example i add on n point then m point exist with zero. then when i delete m point, n point also disappear.<br>when this happen, i use topology to fixed it, but the software closed automatically.<br><br>(Mohd Hafizie)<br>student <span style="border-bottom: 2px dotted rgb(54, 99, 136); cursor: pointer; background: none repeat scroll 0% 0% transparent;" class="yshortcuts" id="lw_1303154461_2">Air Cond</span>. & Ind. Ref. department,<br>University kuala Lumpur.<br></div> </div></body></html>