Calculation

Thse codes calculate values which are then added to the output data.

• ^action( action )^
• ^count( group, attribute[, precision] )^
• ^max( group , attribute[, precision] )^
• ^mean( group , attribute[, precision] )^
• ^min( group , attribute[, precision] )^
• ^sum( group , attribute[, precision] )^
• ^value( expression )^

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