This operator is the Vector equivalent of the Sum of all channels ("Sum of all channels") operator for floating point samples.
This operator will sum the fields on equal positions of the vectors of each channels in order to form one output vector, which will have the same length as the input vectors.
Symbol in the Object Toolbox

Operator ports
Input V: Specific sample type, see below.Output V_sum: Floating point value buffers
If the input has only one channel, then the output will just be a copy of the input vector.
Properties
Find more information about changing properties here: "Properties Viewer"Caption
type: Word or phraseThe name of the object in the project. This name must not contain '.', '$' nor '@' characters.
For more information about the rules and usage of the Caption property, please refer to "Caption property - background and usage".
Documentation
type: See descriptionOptional documentation of this object. If this object is an operator, the Documentation text is displayed below the operator symbol.