value (nodebox)

Single values in a graph: value.math and value.compare do arithmetic and comparison with the operation picked by a parameter, value.expr follows a Luau expression over the graph's clock, value.get reads one field of a record by a dotted path, and value.switch picks one of two values by a Bool. value.present and value.fallback are how a graph used as a node handles an input its caller may leave unwired: present answers whether anything is wired, fallback takes the wired value or a fallback.