When you read very big wikipedia article in large wide screen monitor, you need to move your head left and right. The lines are too lengthy and occupy more than 80% of the screen. Not good for reading.

Firebug -> Console -> Paste the below script

$("#bodyContent").css("-moz-column-count", 2);
$("#bodyContent").css("-moz-column-width", "400px");
$("#bodyContent").css("-moz-column-gap", "20px");
$("#bodyContent").css("-moz-column-rule", "2px solid black");

Then click on Run.
This will make the page two column.
Have fun!
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