Making sections through models is straightforward with the interactive section tool. Found in the extra tools drawer at the bottom of the main menu, it can be placed at any angle through a model and adjusted for precision.
Once a section is placed, visibility settings can be modified, with a choice of three different settings of varying transparency; invisible cut, transparent cut, and no cut. The section plane can be left in the scene when switching between tools. It's a convenient tool for quick viewing when modeling interiors.