That means that iPresentInterval and ipresentinterval will be read as the same. This means that if exists at the top of the INI, and another exists at the bottom of the INI, only the top section will be used, even if the second section contains settings not listed in the top section.There are mod utilities that help sort the INIs better so that you can read through them, and any duplicates will be readily apparent. Duplicate sections will not be used in any case. If more than one section exists, only the first one will be used. That means that and will be read as the same.
All comments are prefixed by a semicolon, ' '. Comments should only be placed on a line that does not contain a setting, lest it be mistaken for a value of a setting. Basically, a comment is 'seen' as a setting that merely does not exist, and therefore does not affect anything, so the game engine allows it to exist but ignores it. That means that 'setting=value' will do the same as 'setting = value.'
