The Leo may be Ped which just means to hold the pedal. Perhaps if there is a little star thing that appears shortley after the Leo sign (it also looks like the BP logo) Then it definately is the Pedal marking.
FUNCTIONAL CAPACITY. Functional capacity refers to the capability of performing tasks and activities that people find necessary or desirable in their lives. One way of examining the effects of disease on people and communities is through mortality and morbidity (illness) statistics. But another way, which took on increased significance in the last decades of the twentieth century, is through examining functional status or functional capacity.
Output of a spirometer. Vital capacity is the maximum amount of air a person can expel from the lungs after a maximum inhalation. It is equal to the sum of inspiratory reserve volume, tidal volume, and expiratory reserve volume. A person's vital capacity can be measured by a wet or regular spirometer. normal adult has a vital capacity between 3 and 5 litres. A human's vital capacity depends on age, sex, height, mass, and ethnicity. Lung volumes and lung capacities refer to the volume of air associated with different phases of the respiratory cycle.