Sidebar

The sidebar shows the navigation tree for the current area. It is provided by the sidebar plugin, which is enabled by default.

A toggle button in the header, aligned with the sidebar’s edge, shows and hides it:

• On wide viewports, the sidebar is shown by default and the toggle collapses it. The choice is remembered across pages.
• On small viewports, the sidebar is hidden by default and the toggle slides it over the content as a popover, so clicking outside it or pressing Esc dismisses it. This state is not remembered.

On small viewports the toggle works even without JavaScript; JavaScript is only needed for collapsing on wide viewports and for persistence.