Home.md

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+---
+format: markdown
+title: Blender interface
+...
+
+# user preferences settings
+
++ menu  
+
+~~~
+File -> Users Preferences
+~~~
+
++ keyboard shortcut  
+
+~~~
+ctrl Alt u
+~~~
+
+Interface : View Manipulation  
++ Zoom to mouse position
++ Rotate around selection
+
+Input : Mouse  
++ Emulate 3 button mouse
++ Emulate Nompad
+
+* 1 : Front Persp
+* 2 : User Persp - rotate x
+* 3 : Right Persp
+* 4 : User Persp - rotate z conter clock wize
+* 5 : User Ortho
+* 6 : User Persp - rotate z clock wize
+* 7 : Top Persp
+* 8 : User Persp - rotate x
+* 9
+
+Disable Alt-click in Parameters XFCE -> Peaufinage des fenetres. put ...
+Settings->Xfce 4 Settings Manager->Window Manager Tweaks->Accessibility-> and change Key used to grab... to "none" 
+
+then you can rotate with alt - left click
+
+# Screen DPI
+
++ Blender User Preferences
+General : DPI