This information is part of the Modelica Standard Library maintained by the Modelica Association.
The output is false if at least one input is true, otherwise the output is true.
The input connector is a vector of Boolean input signals. When a connection line is drawn, the dimension of the input vector is enlarged by one and the connection is automatically connected to this new free index (thanks to the connectorSizing annotation).
The usage is demonstrated, e.g., in example Modelica.Blocks.Examples.BooleanNetwork1.
Demonstrates the usage of blocks from Modelica.Blocks.MathBoolean