Try this.  Try that.  What about those?

 

Quickly toggle lines in and out of your plans with the checkboxes in the "In" column.

 

In this example, we're looking to see what results if we take NBC out of a prime time plan.  With two clicks, you can put NBC back in and try taking something else out:

 

 

Click on the "In" box for a subtotal line to turn all of the included lines in or out, all at once.

 

 

 

Even without subtotals, you can toggle a whole contiguous group of lines by do an alt-click on the "In" box for any one of them.

 

The "In" boxes are very handy when you are optimizing just certain lines or parts of a plan.  See Optimizing Part of a Plan.

 

For another interesting usage of the ""In" boxes, see the case study Planning for General and Hispanic Campaigns.