Contact Form

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When contacting us, choose the most appropriate subject and be as specific as possible.
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  2. Technical problems with the site: choose this, if you have found that some part of site is not working as expected. Be specific and describe all actions you did before encountering the error.
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  4. Typo/Mistake in notes or solutions: choose this, if you have noticed that a note has a mistake or the solution to a question is partially or totally incorrect. Again, be specific!
  5. Comments: choose this, if you want to comment on the site or its part.
  6. Other: under this subject, write anything else.