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  1. Why do I get logged off automatically?

    If you do not check the Remember login box when you log in, the site will only keep you logged in for a short time. This prevents misuse of your account by anyone else. To stay logged in, check the...

    https://nemar.org/kb/registration/autologout

  2. Why do I need Java?

    In order to access the simulation tools, you must have Java version 1.4 or later installed on your machine and enabled in your web browser. Note that Java is not the same as Javascript. Visit the...

    https://nemar.org/kb/misc/java

  3. Why do I need to register at all?

    Registration will give you access to additional features not available to guest users, including access to simulation/modeling tools, the ability to ask questions, create private groups,...

    https://nemar.org/kb/registration/register

  4. Why the math question?

    When you use the Help button to submit a trouble report, it may ask you a simple math question such as "What is the sum of 3 and 5?" You get this if you're not logged in. Providing a correct answer...

    https://nemar.org/kb/misc/why_the_math_question