Ключевые слова: abstract, agreement, answer, background, business, check, checkbox, checklist, choice, choose, clip, concept, conceptual, correct, cross, customer, decide, decision, design, draw, exam, feedback, form, good, internet, lead, mark, marketing, objects, opinion, poll, quality, question, questionnaire, red, response, right, sign, success, survey, symbol, symbolic, test, tick, tool, vote, voting, write, yes,