About 80 column rule and tabs

I always try to use the sacred 80 column rule and so limit all lines to a maximum of 79 characters. Limiting windows to 80 characters makes it possible to have several windows side-by-side and makes the code more readable. Nowadays, the newer editors and users of editors have forgotten this and make it really hard to read code.

Another thing I would like to mention is tabs. I do not like to use tabs and replace them by spaces. My strong opinion is that tabs are evil. This rule also helps, when you are working with such languages as Python, where it is very important to never mix tabs and spaces.