home screen; showing general layout. Flow chart is to the far left, just showing the things that will always stay in that section: the logo, social media links, and subscription option. Next to that is the column with links to different pages within the website. The home page will act like a "news feed" just showing different stories from all different sections.
food & farm section; this shows what happens if the user hits the food and farm tab. The "news feed" with scroll down till it hits that section. The "flow chart" will show you what section you're in, and the column will highlight the section chosen with sub-tabs under that section.
switching to another section; this scenario shows what happens when the user switches to another section. The 'flow chart" just keeps adding onto show the user's history, enabling them to return to previous sections or specific articles within that section.