There is no thing called WDYSIWDYG. It's WYSIWYG. Full Form-- 'What You See Is What You Get'.
WDYSIWDYG is not a correct abbreviation instead it is WYSIWYG. It is a type of editor which helps developer to see what are the effects of work/code he is using. The full form is "What you see is what you get".
rt 90 means rotating clockwise (ck) 90 deegree and if someone ask you what i rt 180 the answer is very easy rotate 180 deegree clockwise same like rt 270
advantages of ms powerpoint are; 1 It is a good application in computer for teachers for better explanation for kids. 2. it helps for better understanding of subjects or the topic. 3.we can develop your skills of view points..