• You can replace "no" with "0", "off" or "false". Similarly, "yes" has the same effect as "1", "on" or "true" (but don't type the quotes). This applies ONLY to <boolean> entries (yes/no, 1/0, on/off, true/false), NOT to numeric (decimal/hex) or string (text) values (i.e. DMABufferSize = 0 - 64 KB), which have different measuring units, ranges or characters (exemplified below).
• Windows loads its built-in/default values (shown below) for all .INI settings that are not present.
• All Windows .INI lines are case insensitive.
• You can comment (remark, disable) any Windows .INI entry (instead of deleting it) by preceeding it with a semicolon (;). Example:
  32BitDiskAccess=ON
• Windows .INI file maximum allowed size is 64 KB, which is an annoying limitation. Anything above that is not processed. :(
• You need to restart Windows every time after modifying ANY System.ini settings!
• CAUTION: BACKUP your .INI files BEFORE making ANY changes!
• If you don't know what these lines do, YOU MUST READ your Windows help files/documents/manuals BEFORE altering ANY configuration files, and BEWARE that if you enter invalid values you may experience data loss and/or unexpected machine lockups !!!

The following are helpful lines to add/modify (using Notepad or Sysedit for editing) under the [386enh] section of your SYSTEM.INI, valid for ALL Windows 9x/3.xx releases if not specified otherwise.
And now that we've cleared it all up, let's have some fun...