are, are not

are evaluates as True if the left hand expression equals the right hand expression. It is a synonym for ‘is‘ that may be used to create more natural sounding conditions where the left hand expression is plural.

Similarly are not evaluates as True if the left hand expression does NOT equal the right hand expression.

For example, given the following case fragment,

                      05 Feb 03    06 Oct 03    07 Nov 03
HDL      [2, 5.5]        7.3*         5.6*         6.1*
LDL                      1.1          0.8          pending
Trig                                               3.6
Notes                 1st note     2nd note     3rd note

all HDL are high
all HDL is high
all LDL are available
at least 2 Trig are not available