Describes how MESS should name files for snapshots. <name> is a string that provides a template that is used to generate a filename. Three simple substitutions are provided:
/ character represents the path separator on any target platform (even Windows)%g represents the driver name of the current system%i represents an incrementing index
If %i is omitted, then each snapshot taken will overwrite the previous one; otherwise, MESS will find the next empty value for %i and use that for a filename.
The default is %g/%i, which creates a separate folder for each system, and names the snapshots under it starting with 0000 and increasing from there.
mess -snapname <name>