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  2. Continuous performance task - Wikipedia

    en.wikipedia.org/wiki/Continuous_performance_task

    In the Conners' CPT-III clients are told to click the space bar when they are presented with any letter except the letter "X". The person must refrain from clicking if they see the letter "X" presented. [1] [9] In QbTest, [5] the client is seated in front of a computer wearing a headband with a reflective marker. During the 15–20 minutes test ...

  3. Three-click rule - Wikipedia

    en.wikipedia.org/wiki/Three-click_rule

    The principle of the “three-click rule” is often used to test the user-friendliness of a program or application. The implementation of the rule of three clicks is evident in the design of modern day operating systems and applications where users can complete most tasks from starting the computer or app and completing a desired task in less ...

  4. Space bar - Wikipedia

    en.wikipedia.org/wiki/Space_bar

    The space bar, spacebar, blank, or space key, [1] is a key on a typewriter or alphanumeric keyboard in the form of a horizontal bar in the lowermost row, significantly wider than all other keys. Its main purpose is to conveniently enter a space , e.g., between words during typing .

  5. Fix problems sending AOL Mail

    help.aol.com/articles/aol-mail-troubleshooting

    If you're having problems sending mail, there are a few troubleshooting steps you can take to fix the problem. Restart your computer:. If you haven't shut down your computer in a while, we recommend that you begin troubleshooting by restarting your computer.

  6. Table of keyboard shortcuts - Wikipedia

    en.wikipedia.org/wiki/Table_of_keyboard_shortcuts

    Ctrl+Alt+Show Windows then move mouse and click Save screenshot of arbitrary area as file ⇧ Shift+⌘ Cmd+4 then click+drag mouse over required area: Print Screen click+drag mouse over required area, then ↵ Enter : Ctrl+⇧ Shift+Show Windows then click+drag mouse over required area Copy screenshot of arbitrary area to clipboard (Snip)

  7. Alt key - Wikipedia

    en.wikipedia.org/wiki/Alt_key

    In their original function, both Alt and Meta would set the high bit of the signal generated by the key to 1 (for example, A generates 01000001 while Alt+A generates 11000001). However, in modern software, due to the requirement for all bits to be used for post-ASCII 8-bit character sets, Alt no longer works in such a way.

  8. Use AOL Official Mail to confirm legitimate AOL emails

    help.aol.com/articles/what-is-official-aol-mail

    AOL Mail is focused on keeping you safe while you use the best mail product on the web. One way we do this is by protecting against phishing and scam emails though the use of AOL Official Mail.

  9. Non-printing character in word processors - Wikipedia

    en.wikipedia.org/wiki/Non-printing_character_in...

    The most common non-printable characters in word processors are pilcrow, space, non-breaking space, tab character etc. [1] [2] Characters