A simple grid pattern with randomized elements as an example of how you can use Paragraphic to make seamless tiling patterns using the tiling repetitions preview and different techniques.
Example of both using connections to link the repetition pattern to the artboard size to make it line up perfectly, and to use the seamless repeater node to automatically cull and repeat elements extending out of the artboard edge to make the layer tile seamlessly.
You might also be interested in this youtube video example of making seamless randomized tiling patterns in Paragraphic: Paragraphic 0.9.1 Randomized seamless tiling pattern