Notetaking is the practice of recording information captured from a transient source, such as an oral discussion at a meeting, or a lecture. Notes of a meeting are usually called minutes. The format of the initial record may often be informal and/or unstructured. One common format for such notes is shorthand, which can allow large amounts of information to be put on paper very quickly. Notes are frequently written in notebooks, though all sorts of paper may sometimes be used: for instance, some people like to use Post-It notes. Notetaking is an important skill for students, especially at the college level. Many different formats are used to structure information and make it easier to find and to understand, later. Computers, particularly tablet PCs and personal digital assistants (PDAs) are beginning to see wide use as notetaking devices. In some contexts, such as college lectures, the main purpose of taking notes may be to implant the material in the mind; the written notes themselves being of secondary importance.