+showexec -- If set, the execute permission bits of the file will be
+ allowed only if the extension part of the name is .EXE,
+ .COM, or .BAT. Not set by default.
+
+debug -- Can be set, but unused by the current implementation.
+
+sys_immutable -- If set, ATTR_SYS attribute on FAT is handled as
+ IMMUTABLE flag on Linux. Not set by default.
+
+flush -- If set, the filesystem will try to flush to disk more
+ early than normal. Not set by default.
+
+rodir -- FAT has the ATTR_RO (read-only) attribute. But on Windows,
+ the ATTR_RO of the directory will be just ignored actually,
+ and is used by only applications as flag. E.g. it's setted
+ for the customized folder.
+
+ If you want to use ATTR_RO as read-only flag even for
+ the directory, set this option.
+