Lets show this with an example. At the bottom of this post is a detailed meal-view for a fruit-meal:
Red: This shows the total amount of calories for the meal. The fruit-meal consists of 207.8 calories
Yellow: This shows the total amount of gram for the meal and the source. The fruit-meal consists of 46.4 gram of carbs, 2.4 gram of protein, 0.8 gram of fat and no alcohol.
Green: This shows the sources of all the calories (from the red field above). The fruit-meal consists of 190.4 calories from carbs, 10 calories from protein, 7.4 calories from fat and 0 calories from alochol.
Blue: This shows the energy-distribution for the fruit-meal. 91.6% of all the energy is from carbs, 4.8% of the energy is from protein, 3.6% of the energy is from fat and 0% from alcohol.
purple: This shows the amount of each food-item. The fruit-meal consists of 1 apple and 2 bananas
white: This shows the total amount of calories from each of the food-items. The fruit-meal consists of 41.3 calories from an apple and 166.5 calories from 2 bananas.
For glycemic load, check out the link below: