correction corrector deletion eraser erasing errors item marks mistakes object office paper pencil pencil marks removal removing pencil marks rubber rubbery school stationery art artist business draw drawing lead leisure mark objects pencils tool wood work write writing communicate communication box check choice choose evaluation exam fill form multiple option pen questions survey test tick answers answer development economy graph questionary report results advice challenge challenging concept control cross decision decisions difficult difficulty direction expertise illustration key leadership manage management negative negativity no opportunity organisation organization positive positivity problem Question questionnaire result right solution solve solving teamwork tick-box trouble troubleshoot troubleshooting uncertain uncertainty wrong yes