mtools: old style configuration

 
 3.7 Backwards compatibility with old configuration file syntax
 ==============================================================
 
 The syntax described herein is new for version `mtools-3.0'. The old
 line-oriented syntax is still supported. Each line beginning with a
 single letter is considered to be a drive description using the old
 syntax. Old style and new style drive sections may be mixed within the
 same configuration file, in order to make upgrading easier. Support for
 the old syntax will be phased out eventually, and in order to discourage
 its use, I purposefully omit its description here.