The system.ini file is used to store selected default global settings. Currently, new settings are being added this file rather than the blogconfig.php file, which was previous used for all settings.
This section holds defaults for new blog entries.
This is the number of file upload fields that appear on the entry edit page. You can disable uploads from the edit page by setting this to 0.
This determines whether or not Pingback pings are sent to entries on the same server. If set to 1, LnBlog will send Pingback pings when you link to a blog entry on your own site. If set to 0, it will only send ping to entries on other servers.
When set to 1, this will put all replies (comments, TrackBacks, and Pingbacks) in a single list for display. When set to 0, each type of reply will be displayed in a different section.