update readme/help

Help.md

@@ -39,6 +39,13 @@
 
 ---
 ### Other Features
+* Switch window between its foreground and background dual position/size
+  * Bring a foreground window to its previous background position and z-order by click the empty desktop background area (not occupied by any window)
+  * Bring a background window to its previous foreground position by click it or alt-tab
+* Restore a new window to its last closing position
+  * Ctrl click the PW icon
+* Put the current window to background, useful if the window is maximized
+  * Ctrl-Alt click the PW icon
 * Create named capture(s) to disk
   * To save a named capture to disk, Ctrl click the "Capture windows to disk" menu option, then enter a name in the pop-up dialog
   * To restore the named capture from disk, Ctrl click the "Restore windows from disk" menu option, then enter the name of the previously saved capture in the dialog

README.md

@@ -16,7 +16,7 @@ this tool and not have to worry about re-arranging when all is back to normal.
 - Capture snapshot: saves desktop layout snapshots in memory (max 36 for each display configuration). The window z-order is preserved in the snapshot. This feature can be used as an alternative to virtual desktops on Windows 10.
 - Auto Restore can be paused/resumed as desired.
 - Supports automatic upgrades.
-- For more Features and Commands, take a look at the [Quick Help page](https://www.github.com/kangyu-california/PersistentWindows/blob/master/Help.md)
+- Support foreground/background dual position switching. For more Features and Commands, take a look at the [Quick Help page](https://www.github.com/kangyu-california/PersistentWindows/blob/master/Help.md)
 
 ## Installation
 - Download the latest PersistentWindows*.zip file from the [Releases](https://github.com/kangyu-california/PersistentWindows/releases) page