Airplanes

* Below zero is rejected.  Waay to big is rejected
* Background picture changes
* Background stored on laptop, not on the cloud
* Visual box surrounds inputs
* Title set
* Video embedded
* Ask for front seat weight
* Ask for back seat weight
* Ask for fuel weight
* Compute total weight
* Compute center-of-gravity
* Include airplane structure in the math
* Say if c-o-g is outside 82..93, or if weight exceeds 2450


Farm

* Below zero is rejected.  Waay to big is rejected
* Background picture changes
* Background stored on laptop, not on the cloud
* Visual box surrounds inputs
* Title set
* Video embedded
* Ask How many acres should be planted in wheat?
* Ask How many acres should be planted in corn?
* Ask How many acres should be planted in rice?
* Has a bar chart for acres used
* Has a bar chart for water used
* Say if water or land exceeds limits
* Say total profit