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  2. Retractable pen - Wikipedia

    en.wikipedia.org/wiki/Retractable_pen

    A pen being clicked. A retractable pen is a type of ink pen that has a spring-loaded ink cartridge which retracts and extends outside a protective housing. By clicking downward on the top of the pen, the tip is extended and locks in place at the bottom of the housing for use.

  3. Invisible ink - Wikipedia

    en.wikipedia.org/wiki/Invisible_ink

    Invisible ink can be applied to a writing surface with a specialty purpose stylus, stamp, fountain pen, toothpick, calligraphy pen, Cotton swab, or even a finger dipped in the liquid. Once dry, the written surface looks as if it were blank, with a similar texture and reflectivity as the surrounding surface.

  4. Decoder pen - Wikipedia

    en.wikipedia.org/wiki/Decoder_pen

    The decoder pen, yes-no pen, yes-know pen or magic pen book is a combination of decoder pen or marker specially designed to reveal invisible ink-encoded pictures or writing, [1] in the form of answers to questions or hidden parts of pictures, with specially created children's books with hidden words and pictures. They were most popular in the ...

  5. Penmanship - Wikipedia

    en.wikipedia.org/wiki/Penmanship

    Holding the pen and guiding it across paper depends mostly upon sensory information from skin, joints and muscles of the hand and this adjusts movement to changes in the friction between pen and paper. [31] With practice and familiarity, handwriting becomes highly automated using motor programs stored in motor memory. [32]

  6. List of terms about pen and ink - Wikipedia

    en.wikipedia.org/.../List_of_terms_about_pen_and_ink

    Ballpoint pen – an ink pen which uses a roller ball tip; Ballpoint pen artwork; Bic Cristal – a brand of inexpensive, disposable ink pen; Birmingham pen trade – commerce of ink pens in Birmingham, England; Birmingham Pen Trade Heritage Association; Biro – a type of ink pen, also known as a ballpoint pen

  7. Fidgeting - Wikipedia

    en.wikipedia.org/wiki/Fidgeting

    There are several devices that aim to aid fidgeting, including fidget cubes, fidget spinners, fidget sticks (kururin), [20] and fidget pens. These "fidget toys" are typically intended to help students with autism or ADHD focus better, [21] [22] and come with a variety of buttons and switches that can be played with by the user.

  8. Bic Cristal - Wikipedia

    en.wikipedia.org/wiki/Bic_Cristal

    The only exception is the BIC Cristal UP, a pen marketed by Bic that supposedly creates more vivid lines when used. These pens have a white barrel and, depending on what color the ink reservoir contains, a small area of the pen barrel and cap with the corresponding ink color.

  9. Gel pen - Wikipedia

    en.wikipedia.org/wiki/Gel_pen

    The general design of a gel pen is similar to that of a regular ink-based pen, with a barrel containing the writing mechanism and a cap, and a reservoir filled with ink. At the end of the ink tube is an ink "follower", made of more viscous gelled material which is usually translucent and follows the water-based ink.