This feature is useful if you keep using similar captions with similar hashtags. - Created hashtags are saved automatically as-well. You can reuse them anytime by tapping on the hashtag button (they will be inserted at the end of the caption text). --- Why it matters? Unformatted comments can irritate readers on Instagram as they are not there to read a story. A good strategy is to create posts with captions that are entertaining to read and/or aesthetically pleasing to consume. The same applies to unformatted bios that are just plain messy. Most often, brands and influences need to write lengthy messages as captions for their posts and comments. Adding spaces in-between lines is somethings that needs to be considered. Line breaks will definitely improve readability. If you're writing a post to promote a contest or giveaway, you probably need to make sure all the details are included and presented clearly for the reader. As for your Instagram bio, you need a lengthy caption as well where you make sure to you list all your important achievements when describing yourself. When you don't want to risk losing interest of people you're trying to impress or engage by making it too dificult for them to read your captions (especially when you have lots of information to share through your captions, hashtags and bio), you definitely need to properly format your text. --- Please note that this app is a third party app, not affiliated with Instagram company.