PWM may refer to:
In Unix computing, Ion is a tiling and tabbing window manager for the X Window System. It is designed such that it is possible to manage windows using only a keyboard, without needing a mouse. It is the successor of PWM and is written by the same author, Tuomo Valkonen. Since the first release of Ion in the summer 2000, similar alternative window management ideas have begun to show in other new window managers: Larswm, ratpoison, StumpWM, wmii, xmonad and dwm.
First versions of Ion were released under the Artistic License, Ion2 and the development versions of Ion3 were released under the GNU Lesser General Public License (LGPL). However, the first release candidate of Ion3 included a license change to a custom license based on the LGPL (specifically modified versions must not use the name ion).
Since version 2, Ion has been scriptable in Lua.
As of September 17, 2009, Valkonen states he is unlikely to continue development of Ion by himself.
The official home page went off-line early 2010.
There's a place in my heart where you used to be
There's a pain, deep inside, don't want the world to see
Nothing, but emptiness, once there was your caress
I was touched by your naked flame
Now, it was hard sometimes, those things that we went through
But believe me when I'd say, I would never mean to hurt you
I hold the memory of holding you next to me
In my arms like a naked flame
Think it over before you break my heart
Think it over before the crying starts
Then we can say goodbye to the tears
I should have known that this time was a coming
But if you ever need me, I'll come a running home to you
There's a place in my dreams where we used to meet
But there's no one around now, it's just an empty street
I hold the memory of holding you close to me
In my arms, like a naked flame