Break of structure: how do you define it precisely?

"Structure broke" is the most-used phrase in trading communities and the least-defined. A break of structure means a new swing high or low — but on which time frame, with which candles, and what does it commit you to?

Define yours:

• the swing that counts for structure
• the time frame that governs
• what a break of structure triggers in your plan

The trend lines guide formalises swing structure.