Cthulhu's Flat Review feature allows you to spatially review the contents, both text and widgets, of the active window. In this mode, Cthulhu treats the window as if it were a two-dimensional sheet of text, eliminating any notion of widget hierarchy or other logical grouping within the window.

The "flattened" contents, also known as the Flat Review context, can be navigated by line, by word, by character, and by object. In addition, you can perform a left-click or right-click on the object being reviewed. Finally, you can use Cthulhu Find, a Flat-Review-based feature to search the active window's contents.

Because the Flat Review context is a spatial representation of the active window's contents, it is created when you first enter Flat Review and only contains those objects which are visible. As a result, you will not be able to use Flat Review to access items which are in the window but currently off-screen. In addition, if the window's contents change of their own accord, the Flat Review context will not automatically be updated. You can cause a new context to be built by toggling Flat Review off and back on.

Finally, Flat Review by its nature is a mode that cannot be used at the same time that Cthulhu is tracking focus. Thus if you are in Flat Review and then use the application's navigation commands to move the caret or to give focus to another object, you will automatically leave Flat Review.