Communication diagram is a kind of behavior diagram in Unified Modeling Language (UML) which helps in visualize the interactions within and between systems. The Communication diagram focus on how objects collaboration together in particular scenario. Instead of creating communication diagram manually, you can also create it programmatically using Open API in Visual Paradigm’s products.
Majority of products in the market though allow users to create multiple messages which results in confusion with multiple arrows on a message link. What even worse is that you find it hard to delete a specific message among various messages. With VP-UML, you can not only combine numerous messages into a combined message with just one arrow, but also delete a specific message of the combined message instead of all messages.