Translation of crónico

Place the cursor (using the mouse) on the section which you want to delete. Hold down the 'Shift' key and press the 'PageDown' key or the bottom arrow key. The document should then be marked in blue.
I want to study either computer science or do an MBA. I love to programm and I am doing it a lot, although I am very impatient sometimes. I also like math, but I hate writting long letters.
I need to learn a lot of Spanish because I want to study at the university of Madrid. In Switzerland, I studied law, but after 2 years I have switched to medicine: to help people, rather than you know....