[This question](https://stackoverflow.com/q/1029027/710951) mentions the tools `xdotool` and `wmctrl` which are able to **change a window's geometry via the command-line**. This OK.

But, what if I want to do more advanced operations, for instance:

* Setting a window **undecorated**.
* Making a window **visible on all desktops** (omnipresent).
* Setting a window **always visible**.

Are there any tools allowing me to do the things avobe *from command-line*?  

I use [Openbox](http://openbox.org/) as my window manager.