added spaceforface mode

README.md

@@ -11,7 +11,7 @@ Modified by: [Dr.-Ing. Hedongliang Liu]
 # Usage
 =====
 
-## Options for the `CELbeamer` document class
+## `Options` for the "CELbeamer" document class
 ------------------------------------------
 The font size in the footer is set larger by default than in the PowerPoint template. This can be enforced to match the original specification using the `smallfoot` option.
 
@@ -34,11 +34,17 @@ Slide titles are set in Helvetica. If you want Franklin Gothic for everything, y
 | Franklin Gothic   | `franklin`            |
 | Helvetica         | `helvet`  (default)   |
 
-The navigation bar in the footer can be disabled using the `navbaroff` option.
+### Other options
+- The navigation bar in the footer can be enabled using the `navbaron` option.
 
-With the `kitgrid` option, the grid of the slides can be displayed.
+- With the `kitgrid` option, the grid of the slides can be displayed.
 
-Example: `\documentclass[de,smallfoot, navbaroff]{CELbeamer}`
+- The `handout` option turns off the animations. Multiple slides for the same frame will be shown on one slide, or according to the commands in the animation instructions. 
+E.g., `\only<2|handout:0>{This is not shown in handout mode.}`, `\item<1-|handout:2>{This shows only on the second slide of the frame in the handout mode.}`
+
+- The `spaceforface` option leaves extra space on the right-hand-side of the frame to put presenter's video. The width of the space can be adjusted by changing the <width> in \setlength{\spaceforface}{<width>} in `CELbeamer.cls`.
+
+Example: `\documentclass[de, navbaron, kitgrid, handout]{CELbeamer}`
 
 ## Title Slide
 -----------