iDoRecall enables you to create linked spaced-repetition flashcards called "recalls." When you practice memory retrieval, if you struggle with the answer, click to see the source at the exact, relevant location. YouTube, Coursera, or Udemy will open in a new browser tab at the linked time code if the source is a video. If it's a webpage, the page will open and scroll to the linked highlighted text or area of interest. You can also link to text and regions of interest in your .docx, .pptx, .pdf, .png, and .jpeg files. You can even link to your Kindle highlights, and clicking to see the source will open the Kindle desktop app to the location of the highlight in the book.