At any point any of the thumbnails displayed on the right that can be seen or scrolled to can be clicked, and the full picture and details of that record will be displayed.
If the record contains more than one part, the display shown will be for the first part and the details include a "dropdown" list which allows any individual part to be selected.
If a little magnify + sign appears in the top left corner of the page, you can click on this to get a bigger display of this part of the record.
If a little push-pin symbol appears at the top left corner of the picture, then this record has push-pin identifications attached to it — see "push-pins" for more details.
Click on the little "X" in the top right corner to close this record and return to the selection page.