__

__ < < __ and similar functions evaluate as true if the value is in between the specified numeric values.  For example, given the following case fragment:

Cholesterol     7.3    5.6    6.1
Triglyceride    1.1    0.8    1.0

6.0 < Cholesterol < 6.2

6.1 <= Cholesterol < 6.2

6.0 < Cholesterol <= 6.1

6.0 <= Cholesterol <= 6.1

Triglyceride < Cholesterol < 8