Sub-graphs and levels

A container node holds a nested graph of its own, so a large workflow can be split into levels instead of one sprawling canvas. Descending into a container opens its inner graph in the editor; the breadcrumb bar shows where you are and takes you back up.

• Nested nodes are addressed by their path, so run arguments can target a node inside a sub-graph.
• A run preset records the level it applies to, which is why switching levels can change the fields you see in Run cfg.
• Save before descending — the editor keeps you on the sub-level, and unsaved parent edits are easy to lose track of.