Infobars are a bit like toolbars but the main difference is that infobars just give information (they don't have any buttons to perform an action)
TreePad Lite has two infobars:
(1) the "Statusbar" at the very bottom of the screen. The statusbar displays the name and path of the currently opened file and whether or not the current file has been changed and therefore needs to be saved.
(2) the "Article title bar" just below the article. It displays the title of the currently active article (this is the same as the title of the selected node in the tree pane).
You can show/hide both infobars as described in the child node of this node.