==== Advanced parameter criteria area ====
==== Advanced parameter criteria area ====
Enables the user to specify additional selection criteria to be used during the flight selection.
Enables the user to specify additional selection criteria to be used during the flight selection.
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Some special fields are defined;
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* '''QNH''', this field may contain a number, or an logical expression, the use of greater than (>) and lesser than (<) is also allowed. Valid is;
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* '''Number of Tracks''', this field may contain a number, or an logical expression, the > and < symbols are '''not''' supported. Valid is;