Highlighter Mode
Where to find it
The Highlight button sits in the canvas toolbar, in the top-right corner of the Flow Editor and the Subflow Editor:
Using it
Pressing it opens the Highlight menu. Enable Highlighter is the master switch — the rest of the menu only appears once it is on:

| Control | What it does |
|---|---|
| Enable Highlighter | Turns highlighting on. Both switches below come on with it. |
| Reset | Clears the highlights and the stored Node states, so the next run starts from a clean canvas. |
| Highlight executed Nodes | The green highlight, on its own. |
| Highlight active Nodes | The pink highlight, on its own. |
The color swatch next to each switch is the color that Nodes are tinted with, so the menu doubles as the legend.
While a Flow is running, ← and → buttons appear next to Highlight active Nodes, with a
counter such as 2/3. They step the canvas from one active Node to the next — useful because a
Flow running branches in parallel has several active Nodes at once, and because the arrows will
also jump into a Subflow to reach an active Node inside it.
Leaving the editor switches the Highlighter off again.
What the highlights mean
In Highlighter Mode, you can see which Nodes have been executed during the Flow run, which are currently executed (active) and which have not been executed at all.
- Executed Nodes will be highlighted by a green background
- Active Nodes will be highlighted by a pink background
- Non-executed Nodes will be rendered semi-transparent.
This way, you get a quick overview on which Nodes are and were executed and which were not. Also, the latest Node state will remain visible even after the Flow has finished or was stopped. If you want to reset the highlights and Node states, just use the Reset button next to the highlighter mode switch.