You can write flowcharts in Hibiol. Here is an example:

Define "step",       as: "step"
Define "decision?",  as: "Decision"
Define "yes_step",   as: "yes_step"
Define "no_step",    as: "no_step"
Define "maybe_step", as: "maybe_step"

Start with: step

step then: another_step

If decision? yes: yes_step
If decision? no: no_step
If decision? maybe: maybe_step

And this is the output: