-It changes the values of the output dimensions (width and height in pixels) and the $X, Y$ values of the projector in a single operation. Since it changes project settings it affects all the tracks for their entire duration and it is not keyframable.
-
-
- The easiest way to use cropping is to click with the LMB at the spot
-to begin cropping and while holding down the LMB drag. This creates a rectangular cropping area.
-To change the size/location of that area, click on any of the 4 corner points with the LMB
-and drag.
-Note the X1,Y1 coordinates and W for width, H for height, in the Crop tool popup menu
-automatically will change numerical value to reflect your dragging. For precise locations, you
-can keyin exact values into those textboxes.
-Once you have the crop are defined as you want it, then click on the Apply button to have the
-actual cropping take affect.
-There are 3 choices of capabilities to choose in the menu pulldown on the bottom right side.
-Reformat (or Reformat Session) which crops and changes the Format for the session.
-Because the Format is changed, this is applied to all tracks in the project.\\
-Resize (or Resize Projector)\\
-Shrink (or Resize Projector and Camera).\\
- An important note here is that the original aspect ratio will be maintained so if your frame is rectangular (as many are) and you "crop" by surrounding the region of interest with a square, the cropped are will be more than you marked in order
-to keep the aspect rectangular shape.
+Cropping is used to reduce the visible picture area by changing the output dimensions, width and
+height in pixels, and the $X, Y$ values. An example of cropping and the crop menu is seen in
+figure~\ref{fig:cropped_area}.
+The easiest way to use cropping is to click with the LMB
+at the spot to begin cropping and while holding down the LMB, drag the mouse. This creates a rectangular
+cropping area. To change the size/location of that area, click on any of the 4 corner points
+with the LMB and drag. While dragging, you will see
+the X1, Y1 coordinates and W for width, H for height, in the Crop tool popup menu
+automatically change numerical value to reflect the current position. For precise locations, you
+can keyin exact values into those textboxes instead of using the mouse.
+Once you have the crop area defined as you want it, then click on the \textit{Apply} button to have
+the actual cropping take affect.
+
+There are 3 choices of crop methods to choose in the menu pulldown on the bottom right side.
+\begin{enumerate}
+ \item Reformat - Reformat Session crops and changes the Format for the entire session.
+Because the Format is changed, this is applied to all tracks in the project.
+The part of the image outside the rectangle will be cut off and the projector will make the video fit.
+The \texttt{Settings $\rightarrow$ Format} window will show the new project Width and Height values and
+the projector tool window will show the new $X, Y$ values. Track size remains unchanged.
+You can undo the cropping by entering the original project dimensions in the
+\texttt{Settings $\rightarrow$ Format} window for the Width and Height. You will also have to use the Projector
+tool in the Compositor toolbar to \textit{Ajdust projector automation} by clicking on the Reset icon.
+ \item Resize - Resize Projector; to undo this, enable \textit{Adjust projector automation}
+and do a Reset.
+ \item Shrink - Resize Projector and Camera; to undo this, enable each of the \textit{Adjust
+projector and camera automation} tools, one at a time, and do a Reset in the menus.
+\end{enumerate}
+An important note here is that the original aspect ratio will be maintained so if your frame is
+rectangular (as many are) and you "crop" by surrounding the region of interest with a square,
+the cropped area will be more than you marked in order to keep the aspect rectangular shape.