In the image attached below, in the (3) light blue content assist box, on the left there are 5 Firefox browser icons. What do they mean? Seemingly they mean those methods are only supported in Firefox. But of what versions? And if a certain element is supported in both Firefox and Chrome, but not IE, how will it show (as there is only 1 column space for 1 icon)?
(image from http://www.jetbrains.com/phpstorm/webhelp/familiarize-yourself-with-phpstorm-editor.html)
On the other hand, in Aptana, there are different columns of browser icons, showing levels of support by light up or