Boolean operators can be used in the expression in either their Fortran or C forms. Trigonometric functions use radians, not degrees. If the boolean subexpression evaluates to TRUE, the larger expression has the value of the arithmetic subexpression. In all the representations, an x or X is allowed in the mask as a wild card. Note that the x represents a different number of wild card bits in each representation.
All representations are case insensitive.
To construct the boolean expression using the mask as the boolean equal operator discribed above on a bit table column. To specify a single element of a vector, give the column name followed by a comma-separated list of coordinates enclosed in square brackets. Higher dimensional arrays of data may appear in a column. But in order to interpret them, the TDIMn keyword must appear in the header. Each vector index can itself be an expression, although it must evaluate to an integer value within the bounds of the vector.