Configuring The Check Spelling Language in PowerPoint 2013 We decided to explain both version due to the slightly difference in the configuration steps. In this post we will explain how to configure the proofing language (the language used by PowerPoint grammar engine to check spelling across the text boxes) of PowerPoint 2013 (Windows Version) and PowerPoint 2011 (Mac Version). We receive questions of different nature and we provide targeted information to help our users succeed in their presentation goals. At we are commited to give the best support for our users in every step of the presentation experience.