A display contains a root frame and its children. A child can be a window or another frame. The root frame or its children can be the current root. The current root is fullscreen maximized (no decorations, no buttons, no menus: nothing, just the application fullscreen!).
CLFSWM is highly dynamic. By default there is only one frame (the root frame). Other frames are created/deleted on the fly. A window can be in more than one frame, so it can have multiple views of the same windows.
Using CLFSWM is like walking through a tree of frames and windows. Enter in a child to make it the current root and make it fullscreen maximized. Leave it to make its parent the current root.
There is no more need for a pager: you are in the pager!
For its binding, CLFSWM has two modes: A main mode with minimal keys and mouse grabbing to avoid conflicts with others applications. And a second mode with more keys and mouse actions. For details of its usage, have a look at the files doc/keys.txt or doc/keys.html.
A lot of functions to manage CLFSWM can be found in the second mode menu. See the files doc/menu.txt or doc/menu.html for an overview.
A frame can be placed anywhere in its parent frame. And can have different layouts to automatically manage its children (tile, tile to left, to bottom, no layout...).
Some actions can be performed by clicking on screen corners. For example a left click on the bottom right corner give you an OS X ExposÃ© like. A left click on the top right corner show/hide a virtual keyboard . And a right click on the top left corner show/hide a terminal (like a quake console)... See doc/corner.txt or doc/corner.html for a summary.
Source code (GPL), screenshots, animations and more details are available on http://common-lisp.net/project/clfswm/