Notebook is the heart of all your interactions in your Network and Spaces. It allows you to keep track of important items, take notes and create all types of documents while gathering feedback from members of your Network. It is your very own electronic storage bin that can hold endless amounts of data.
Your Notebook is divided into two panes. The leftmost pane, or the Preview pane, presents the available content categories in your Notebook and the right pane, or the Work pane, is where you work on the specific category item on the left. See the screenshot below for an example.
In most cases, you can interact directly with items in the Preview pane. For instance, editing a note or adding a comment to a file. Use Notebook to quickly interact with your content and those that you have bookmarked regardless of what Space they belong to.
If you want a larger viewing window while going through Your Stuff, you may click the left-facing arrow on the top left to minimize the left column, showing icons only in lieu of the full category names.
This is how your Notebook looks like with the left column minimized to show icons only. Note the wider right column with the minimized left column.