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 mouse wheel up/down to zoom in/out. For finer adjustments, scroll while pressing *Ctrl* key.
+* **Zoom** : Scroll mouse wheel up/down to zoom in/out. For finer adjustments, scroll with *Ctrl* key pressed.
 * **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.
+* **Zoom fit** : Click _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