: Unlike Helvetica’s horizontal terminal strokes, Arial uses diagonal cuts on strokes (such as the top of the 't' or the ends of the 's'), giving it a slightly more "humanist" feel. Casey Printing Availability and Use Arial font family - Typography | Microsoft Learn
Prior version 6.x shipped separate files for Arial, Arial Bold, Arial Italic, etc. Version 7.00 introduced , allowing applications to switch styles via a single font family reference—improving compatibility with CSS font-weight and font-style properties. Arial Font Version 7.00
To make your paper as professional and accessible as possible using Arial, follow these standard formatting guidelines: : Unlike Helvetica’s horizontal terminal strokes