date in menubar  I frequently refer to the date and time in the menubar. I was looking for the option to put the date next to time, so that I can avoid clicking the date to bring up the drop-down menu which shows the date. There is no easy straightforward way, but I found a small trick that enables me to customize the field fully without much interference to the system. See the example of my menubar above.

international system preferences

First you have to open System Preferences/ International and choose the Formats tab. If you click customize at Times you will find several formats of time that can be customized: short, medium, ... 

One of the most popular questions among webdesigners starting to learn CSS is: What is the difference between id and class?

First difference

Ids are to be used only once in your html layout. Classes can be used multiple ...