There are many ways to achieve precision, but their functionality may not be visible at first sight. Grids, guides, snapping, entering numbers, using transform dialog, custom patterns etc. etc. are all available.
Let us know what exactly you want to do, and we will most certainly be able to describe a way to do it.
The linked manual is not made for mappers, but for people who want to start out and learn to create drawings. This is why those 'precision' parts are not emphasized, or even mentioned, in it.