This page overrides the secondary and tertiary column settings by placing the secondary on the right and the tertiary column on the left.
The relevant YAML frontmatter for this page is:
---
layout: page
title: Right secondary left tertiary column
menuInclude: yes
menuTopTitle: Layout
menuSubs:
- title: Right secondary, left tertiary
index: 6
secondary-column: right
tertiary-column: present
---