http://www.zwsoft.com/forum/viewthread.php?tid=1635 I have been using ZWCAD trial for 2 weeks now and have mentioned a few "Issues" I have come across. At the risk of seeming annoying or picky I will mention a small detail which is only a little frustrating. It seems to me that any blocks that have perfectly vertical and/or horizontal lines and/or concentric circles will "Breakup" and seem to become invisible when any part of a vertical or horizontal line or outer circle cross the edge of the screen or viewport. The parts of the line that are still on-screen will vanish. They are still actually there and I can "Snap"to them, but they become invisible. This ONLY happens with Blocks. NOT regular lines etc. And then, ONLY blocks with Vertical or Horizontal lines and it seems to be affecting Blocks which contain concentric circles also. The outermost circle will disappear as it crosses the window edge or viewport edge followed by the smaller circles as they cross the edge also. I am running a dual monitor setup and it does not occur when moving/panning across the two screens. Does anyone else experience this? or is it just my setup.? As always, any insight into this will be appreciated zw_admin 2010-08-24 11:39:39