Contents Basics of Systems and Nodes | Using the Calculator | Basic Operators and Mathematical Functions | Macros - Signal Functions | Print page $SIG_SUM_SLOTExtracts the sum of values of the channel within the specified abcissa bounds. Variable NameValue TypeVariable TypeArguments:_c CHANNEL [real, integer] _r SCALAR [real]_r2 SCALAR [real] « $SIG_SUM $SIG_VALUE_FIRST_X »