What is the best method of removing excess data from the ISAM db ?
You can now make a whole-world ISAM db and select your own area for a new image. If you really wish to remove data from the ISAM database, make a *bat.all file (or files) containing the countries you wish to remove. This is done by listing the APT section and selecting File/SaveAs Batch Dump. Then edit the ADD| commands to read DEL| and re-input as a Batch Update. Don’t forget that you can make large space savings by re-compiling the SUA section and applying compile filters, and you can remove complete sections by deleting their ISAM files.
