When List Fields has been launched and you have answered the questions about security and if you have saved your Notes document, you will see the main screen:
The screen above has all areas enabled. More on those in a second! You see that List Fields looks like a traditional Windows application with menus, toolbars and other traditional Windows application stuff. Read more about Menus, Toolbars and other stuff here.
First and foremost you see the the Field List Area.
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It's main purpose is to list fields and show their fieldtype and content. The list can sorted, rearranged and grouped in many ways.
The next area is the Information Area:
The purpose of the Information Area is to show details about the currently selected Notes database, document and field. Since List Fields has the possibility open more than one document simultaneously, this area can be nice to consult to see real details about the currently selected field.
Note that you also can launch other tools from this area. In the screen above we can launch NotesPeek which then will start with the currently selected database and document.
The final area is the Output Area:
The purpose of the Output Area is to display the content of the currently selected field. List Fields will also show additional nice to know-information, if the fieldname is a typically used Notes fieldname. In the screen above you see information about the field $Fonts.
The next topics dive into each of these areas.
List Fields will either show the data directly - or - an interpretation of the internal content for you, such as for the internal font-table in the field $Fonts.
Finally, the output area also show the Field Analysis area, where field content may be compared between documents if you have selected more than one document.