includes and does not include allow us to build rule conditions that identify cases that either have or do not have some specified attribute with values in a particular range.
For example, suppose that we defined a Calculated Value Attribute to have name VeryHigh and formula

{pollen, animal} in range [50, 5000]

where pollen is the group attribute {birch, timothy, mugwort} and animal is the group attribute {cat, dog}. A case such as:

age            6
sex            F
birch          40.0
timothy        63.5
mugwort        12.1
cat            34.6
dog            25.3

Would satisfy the condition: VeryHigh includes timothy

Whereas a case such as:

age            6
sex            F
birch          60.0
timothy        33.5
mugwort        12.1
cat            55.6
dog            25.3

Would satisfy: VeryHigh does not include timothy