Update 3 4 control perspective

3-4-control-perspective.md

@@ -7,10 +7,10 @@ After adding a new layer or selecting a layer from the list, **Rendering Pane**
 
 ### Controlling camera
 
-* Zoom : Scroll up/down to zoom in/out. For finer adjustments, scroll while pressing *Ctrl* key.
-* Rotate : Press and hold left mouse button, and drag.
-* Pan : Press and hold right mouse button, and drag.
-* Zoom fit : Press *Zoom Fit* button on _Map_ panel in _Home_ menu category, in order to go back to the default camera position.
+* **Zoom** : Scroll up/down to zoom in/out. For finer adjustments, scroll while pressing *Ctrl* key.
+* **Rotate** : Press and hold left mouse button, and drag.
+* **Pan** : Press and hold right mouse button, and drag.
+* **Zoom fit** : Press _Zoom Fit_ button on _Map_ panel in _Home_ menu category, in order to go back to the default camera position with a zoom level fitted to the entire scene.
 
 ### Changing the display mode