+@cindex snapshot file field ranges
+@opindex show-snapshot-field-ranges
+The specific range of values allowed in each of the @dfn{Number} fields
+depends on the underlying C datatypes as determined when @command{tar}
+is compiled. To see the specific ranges allowed for a particular
+@command{tar} binary, you can use the
+@option{--show-snapshot-field-ranges} option:
+
+@smallexample
+$ @kbd{tar --show-shapshot-field-ranges}
+This tar's snapshot file field ranges are
+ (field name => [ min, max ]):
+
+ nfs => [ 0, 1 ],
+ timestamp_sec => [ -9223372036854775808, 9223372036854775807 ],
+ timestamp_nsec => [ 0, 999999999 ],
+ dev => [ 0, 18446744073709551615 ],
+ ino => [ 0, 18446744073709551615 ],
+@end smallexample
+
+(This example is from a GNU/Linux x86_64 system.)
+