+ Note: In version 1.5 of Routino the --slim option has been removed but
+ at compilation time a separate program called planetsplitter-slim is
+ created that operates in slim mode. In slim mode the temporary files
+ and database files are read as needed rather than being mapped into
+ memory. This allows a database size greater than 2 GB on 32-bit
+ machines or usage with little or no virtual memory (e.g. some virtual
+ machines). The penalty for this is that the program takes about four
+ times as long to run.
+