Please follow these instructions to ensure correct and speedy answering of questions     You must answer the Questions in their displayed order. You must attempt each Question before moving on to the next one Answer all parts of each Question carefully, including any multi-choice element After attempting each Question,  Press it's mark button     Your answer(s) to just that Question will then be marked. If not fully correct, please try again by pressing the reset button    You may use these two buttons as many times as you wish If you need help there is a hint button to provide a clue shown after two incorrect attempts,     but halves this question's remaining marks if used in Graded mode. Each question must be attempted 3 times before a reveal button is available to show answers     but freezes this question's marks if used in Graded mode. At the end of the Quiztorial press 'score exercise' for your test summary If you need to save your score, you can do so as a plain text file or as a spreadsheet;     follow the on-screen instruction to do this. When you have scored an Exercise and you wish to leave, press this button which will return you to the MulteGraph Homepage You can quit an Exercise at any time by using this button. No score will be calculated.