John Barnett, from the UK, emails:
As a Building services Technician I often have to bind drawings, purge them and audit them. Is it possible for you to create a lisp routine that would allow me to do this to multiple drawings?

You don't say which software you are using, but I am going to assume AutoCAD. In order to batch process multiple drawings, you have to create a script (*.scr) and then run the script externally from AutoCAD. The easiest way to do this I have found is to use Scripteeze or some other batch processing software.

To write the script, use Notepad (Word adds unnecessary formatting.)
Your script would look something like this:
-xref;bind;all;
-purge;all;
-audit;
-save;;

The Scripteeze website has samples of scripts to help guide you through the process. The best method I have found is to perform the commands of what you want to do in the correct order. Then right click on the command line and Copy History. Paste the history into Notepad and edit it (delete the unnecessary verbage and add the enter/returns).

It is not that I don't want to do your work for you. Consider this more along the lines of "teach a man to fish...".

Gary Sarver emails this tip:

You asked for some tips to speed up performance. Here is one for all the AutoCAD users out there. In this digital age there is concern over the security of electronic information and to that end Autodesk built in it's own feature. AutoCAD checks for digital signatures upon opening each drawing. The application is a little known feature. Therefore, not many know of it. Browse to C:\WINNT\system32. Contained therein is an application called AcSignOpt.exe. If you don't work in a secure environment or care about digital signatures double- click the icon and deselect the option to check for them.

If you are working on an older release of AutoCAD (my 2000 release does not have this installed), you don't have to worry about this. The easiest way to check is to run a search for the AcSignOpt.exe file on your hard drive and go from there.

Many users have noted that the more recent releases of AutoCAD software take longer to load when you bring up a drawing. You can speed up your drawing loads by turning off several variables - like the TrustedDWG. Just be careful because if you turn off some of them (like the verification for your license key), you may not get AutoCAD open at all.

Congrats to Sycode, an Indian software development firm, for joining the ranks of the ADN - Autodesk's Development Partner Network. Sycode currently offers a myriad of translation products that are add- ons to Autodesk and SolidWorks software.