While test-driving Aptana recently, I found the absence of a Tile command for editor tabs absolutely vexing!
While this is probably old hat for Eclipse veterans, I was pleased to discover that there is a way — albeit somewhat elusive for those new to the Eclipse platform.
As is often the case when you’ve been using Windows for far too long, there are much easier ways to do things — so simple that you sometimes don’t even think to try them. This is one of those cases, and the answer is as simple as drag-and-drop.
You just select an editor tab and drag it to an edge of the editor area to dock the editor to that side. To restore it, drag the tab back to the top.