diff --git a/Interaction.md b/Interaction.md
index a438190..942e3a4 100644
--- a/Interaction.md
+++ b/Interaction.md
@@ -3,22 +3,21 @@
 ## Double Click Zoom
 
 * Apply a zoom factor
-* Apply resolution constraint
+* Apply resolution constraint for each double click
 
 ## Pinch Zoom
 
 * No resolution constraint while pinching
-* Apply resolution constraint when releasing mouse
+* Use CSS3 transforms?
+* Apply resolution constraint when releasing mouse to determine the final resolution
 * Animate to final resolution
 
 ## (Alt) Drag Rotate
 
 * No rotation constraint while rotating
-* Apply rotation constraint when releasing mouse
+* Apply rotation constraint when releasing mouse to determine the final angle
 * Animate to final angle
 
 ## Mouse Wheel Zoom
 
-* Apply resolution constraint as the user scrolls
-
-## Shift Drag Zoom
\ No newline at end of file
+* Apply resolution constraint as the user scrolls
\ No newline at end of file