In the following example, hover (or tap, on mobile) on the manuscript title.
:manuscript: :title: Hover me! Introducing the handrail. ::
You will see a context menu appearing to the left of the manuscript title. This area is called the handrail. It is an area that allows for interaction with individual parts of the manuscript. RSM markup automatically generates handrails for different parts of the manuscript, such as sections and remarks.
:manuscript: :title: Handrails # Sections have handrails :remark: Other special parts have handrails too. :: :: ::
In general, any part of the manuscript that shows a gray border to the left admits interaction via a handrail.
If you are familiar with notebook interfaces such as Jupyter Notebooks, you may think of handrails in RSM as marking individual “cells” in a notebook. The main difference is that in RSM, handrails may be nested within each other, while cells in a notebook are always consecutive.