SciSnap-Window v1

Windows engine v1
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- Press the title bar to move window on the screen
- Move only if the mouse is on the screen
- Press X to close the window (hide)
- Press _ to minimize (position and size are saved)
- Press _ to maxinize (restore position and size precedently saved)
- Resize with the bottom-right control
- You can't resize the window smaller than the title
- When you create the window, if the width of the window is too small to contain the title, widith is enlarged