Groups Pane - displays all of the various groupings of references available. There are several types of groups, some permanent, some temporary. and some user created.
Smart Groups are used to store references matching a particular search strategy. When any references are added to the Library that match the criteria of the Smart Group, they are automatically added to the appropriate Smart Group.
References Pane displays all of the references in a highlight group or the references just imported from a search.
Three Additional Sections of the Screen Display
1) A window with the highlighted Reference displayed, field by field, where you can edit the reference;
2) A Preview of the highlighted reference in your chosen style;
3) The attached PDF under the Attached PDF's Tab; in version X5, X6, and X7, search, highlight, and annotate PDF files that are attached to the reference.
Search Panel - at the top of the Window in EndNote X6/X7 - Use the to the right of the Search box to see more search options.
1) Provides the search criteria for searching from within EndNote or the search criteria for searching other databases such as the Library Catalog.
Sync Button - at the left allows you to synchronize your EndNote X7 or X6 with your EndNote Web Library.