1.PURGE command We can help us clean up some unnecessary data by clearing the command, that is, the PURGE command.

2.WBLOCK command Using WBLOCK command can also help us to "slim down" CAD files. For the graphics that need to be transmitted, creating new graphics files in the form of blocks can reduce the file size to a certain extent. This method is more suitable for transferring files or archiving.

Second, version conversion. After entering the software, we select CAD version conversion, select the output type and version below, import the file, then select batch conversion, and click Preview after the conversion is successful.