Object
Op Input
Here you can connect an geometry or the input of a Matrix Op Node in order to move, scale or rotate each individual distribution point. This can be useful if you only want to output matrices with the Distribution Op Node to which another geometry should be attached, e.g., using a Matrix Op Node. The geometry of the geometry connected at the Op Input will remain hidden.
The second option can be used to directly connect the geometry to be duplicated at the Op Input and can be passed into the scene using the Op Output.
Here you can select the desired order and distribution type for the matrices. The available modes can also be found as individual Nodes in the Distribution group and are described in detail there.