An edge is the line that connects an output port of one block to the input port of another block. Edges define how information flows through an ADL algo by identifying the pathways between ADL blocks. When a block's output port sends a value, that value propagates to the connected blocks which can then use the value to perform their corresponding block actions. You can connect one block's output port to another block's input port, ultimately defining the overall logic of the algo.
Note An input port can receive only a single connection, while an output port can connect to multiple inputs.
Edges can only provide connections between compatible port types. For example, a Boolean block output port can connect to an input port of an Or block, but not to an input port of an Add block. When attempting to connect “unlike” ports, ADL displays a visual warning on the canvas to indicate that the connection is not allowed.
ADL does not allow a an output from a block to be fed back into its own input. When you attempt to create such a circular connection, ADL displays a visual warning on the canvas to indicate that the connection is not allowed.