The Soliant team have just posted a new article, "How to Split a Large File".
Do NOT do this experiment with any working databases!
The article instructs you to "Truncate Table" or to delete a table using the Manage Database dialog.
NEVER DO THIS UNLESS YOU ARE WORKING ON A BACKUP COPY
Always backup before you may destructive changes
Whenever you do any editing on multiple records, copy the affected records to a safe place before you make changes. When you make an error -- you will make an error one day -- you can easily correct the error using your backup.
I have sent a notice to the author asking them to include advice to create a backup and work on a backup. It should not be taken for granted.