[dailykoder]

This for me, too.

Maybe more block-diagram-ish than directed graph. Depends on the software.

I am not sure how this has evolved since I am doing VHDL/FPGA design, but especially there I have the actual block diagram of what I want to build inside my head and just have to "look at it" and type it out with my hands. When it's software, then it's similar. The path the data flows