This submenu contains a number of readouts you can show or hide over top of the view panel content.
Poly Count
Displays polygon statistics for the visible objects displayed in the view panel, including Vertices, Edges, Faces, Triangles, and UVs. This feature is useful for games development. The first column on the left lists the total components of all the polygons in the scene. The second column lists the total components of the selected polygon(s). The third column lists the total selected components. The default is off.
Subdiv current level: Displays the level setting for the currently selected components of the subdivision surface. This option is particularly useful when subdivision components are displayed as points rather than numbers and the level information is required.
Subdiv mode: Displays the mode for the currently selected subdivision surface. That is, Standard or Polygon Proxy mode.
Shows or hides the tool prompts that appear for certain tools. See also Help preferences.