Difficulty reading code in the tutorial

Due to the way in which the code in the tutorial is formated and how the site scales it is often hard to read long stretches of code.

Start by reviewing the tutorial's code presentation at the site scale shown in the attached image, focusing on long stretches of code that are difficult to read. Done means the tutorial code remains readable when displayed at typical site widths and scaling.

Written by the indexing model from the issue text.