A custom text notation used to describe and prototype nested state machines

• Basic Example

We can create a basic statemachine to describes the phases that a butterfly enters during its life as follows.

---
Organism
---

egg
  grow
  hatch >> caterpillar

caterpillar
  eat
  crawl
  cocoon >> butterfly

butterfly
  fly
  mate >> egg

The basic syntax can be described as follows:

• The value between the --- lines provides a name for the machine
• All lines with no whitespace at the front describe phases (in this case egg, caterpillar and butterfly)
• Any indented line (with whitespace at the front) describe an action nested inside a phase.
• Any actions that have >> at the end indicates that the action causes a transition to a new phase (the name of the target phase after the >>)
• Actions that do not have >> do not trigger transitions, but usually causes some side-effect outside the statemachine itself.

You can view the Basic Example Demo to see this in action. Remember to open the panes on the right-hand side (since they are closed by default) and click on an action in the current phase to transition.