Wires have a primary value that is of the type of the wire: one of float, boolean, string or pulse.

In addition to this, some blocks may provide other "fragments" of information alongside the value. These are named properties on the value. They may be other pieces of information provided from an input block, such as the unit in which a measurement is measured, or some extra contextual information for a data source.

Most blocks only operate on the primary value from their input wires, but some blocks can make use of these fragment properties values and extract them into separate output ports (for an example, see the Extract Property block). This gives more flexibility in processing more complex data from external sources.