A bit lenghty way of doing it is as follows:
1. Just select any object and select the properties of that object.
The properties would be displayed at the side. De-select the object
by pressing ESC. The properties window will still be displayed.
OR: Just bring in the properties window.

2. Now, randomly keep on selecting huge chunks of objects starting from
the top level to the bottom level.
If the top level shows 'polyline closed' you need not go further.
Ifit fails, just select one of the smaller sections of that level and
again go for 'properties' check.

The process is time-consuming, but works. I guess you would have figured
this out.

Pancham.


> --__--__--
>
> Message: 8
> From: "Haigh, Richard Daniel" 
> Subject: [mems-talk] AutoCAD problems with mask design
>
> Dear colleagues
> I am using AutoCAD R14 to design a mask set. As the set is a particularly
> complex one, this makes it difficult to detect and correct errors. The set
> has been sent to our mask makers, who have detected a number of 'open
> polyline objects' within the design. Unfortunately, the mask makers cannot
> specify where the open polylines are within the set. It should be noted that
> the ebeam cannot write open polyline objects of zero width when writing the
> masks.
> I have been told that there is a way within AutoCAD to select and display
> open polyline objects, but I am not too sure how to do this. There is an
> option for selecting polylines but it seems that there is no option for
> selecting open ones from closed ones. If anyone has any suggestions - please
> let me know ?