As you can see fitday does not specify at all because there are an abundance of eating plans and you need to follow the one that is best for you. Some people are eating low fat, some low carb, etc. Some favor a specific amount of protein.
Personally I have no restrictions other than staying in a 1200-1400 range on my calories. However, I have noted that if I eat too many carbs I am hungrier, I am less hungry if I eat more protein. Also make sure you are getting your fiber in. This is more challenging when you are cutting calories.
If your sole goal is to lose weight, you will need to work out what works best for you. For the long term you need a meal plan that is nutritious, that keeps you full and that you won't binge on.
There are RDA's for everything. You might want to check that out.
My 2 cents. I am no expert just doing this since Dec.
Fitday start date 12/9/12
Fitday start weight 190
Highest weight Jan 2009 218
Lowest weight Aug 2009 175
Goal 160: ACHIEVED Aug 25/13 (now to figure out how to stay here)
If you do what you’ve always done, you’ll get what you’ve always gotten. –Tony Robbins