The Info tab shows information about all objects of currently selected database object in the Object Browser (Database, Table or other object). Also the Info tab will populate with data for the connection/server if the 'connection node' itself is selected in Object Browser.
The information can be displayed using a tabular/HTML format or using a plain text format. The first will provide the best overview - however the latter will be more compact and will also be useful should you want to copy/paste information to another program.
As HTML Format:
As Text Format:
There is an option in Preferences to change the position of Info tab to either the Upper pane or Lower pane.
You can also search for a particular string in Info tab by selecting Edit -> Find (or press Ctrl+F/F3) from the menu