Well MP, I appreciate the help. And I appreciate those who have helped here, and those who are helping me to fish rather than just be fed, I am really learning a lot. I was starting to panic a bit, I didn't want to delete the invisible items, but I didn't know another way either and I didn't have the time to learn it properly. Now that its over, I can take the time to learn it properly, there's a lot there to be learned. One of my biggest hurdles is time. I don't get much to learn this coding, perhaps a half hour during lunch, an hour or so after work, in between the family and other responsibilities. So when I get to read-up on some subject - but don't get the chance to implement it - I have to wait for the next opportunity. Some times it's days before I can get to implement something I've learned, but by then I have forgotten my thoughts and have to go back and re-read the subject. It's very frustrating to me. That's one of the main reasons I prefer the example code you guys post, I can get key words from those examples and study one element at a time and work toward an end.
Anyway, I was talking with one of the old-time drafters who used Microstation and he informed me that if something was set on Level 0, it would be invisible. I still have to go verify this and make my conversion code applicable to this situation, but I'm a step further along now.
Tim, can you post for me the URL to the help file you found the DXF 70 code in ?? I have been trying to understand and work with Autodesks site:
http://autodesk.com/techpubs/autocad/acad2000/dxf/And I keep coming up short.
70-78
Integer values, such as repeat counts, flag bits, or modes
Using the help file on the PC, I come across everything but what I need. Another frustrating moment.
I have found the 70 code for Attribute flags, MText flags, 'IsReallyLocked' flag, secondary attributes, etc, etc.
When I search for invisible edges, ...
Anyway, I'm still learning and slowing getting more proficient at working with the code. But now you know why I sometimes sound so desperate and frustratingly annoying when you guys have to answer my questions and help me out.