How to remember the position of windows

Hi all,
how do I remember the position of windows (Risc OS for RaspberryPi 3 v5.30)?
Every time I start e.g. Apps or disk (in my case SD card) or any program and I would like it to start in a different place on the screen after restarting it resets to the default position.
Best regards.

You can use my WindOpen module at http://www.armclub.org.uk/free

Open all your apps and windows and do a *WO_WindowDump to save an obey file which contains commands to move the windows to there current positions. You can also include WO_EnsureTask commands at the beginning to start the applications. For editor windows change the WO_MoveWind commands to WO_OpenWind commands, which will load file in to the editor and move it to the correct place. There are also other commands to click on icon bar icons and select from menus etc.

Thank you very much for your reply. As I am just starting my adventure with RISCos I have a question how to install such a module?

The easiest way for WindOpen is to put it !Boot.Choices.Boot.Task