To delete the document or phrase you just need to swipe it off the main screen (list of documents or phrases) to the left for the red DELETE button to appear on the right side. Push DELETE and the document or phrase will disappear from the list and the library. This feature is common for the whole iOS system and can be used in most of the scroll lists through apps.
You have probably missed the IMPORTANT note when opened the app for the first time. Please do the following now: open the Settings app, choose General > Accessibility, and turn ON the Reduce Motion switch. Then return to Superbars and start to create your screen's look. Reducing the iPhone’s screen motion will also extend your battery life.
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