title: What's so great about Block Selection Mode?
body: <p>Longtime Eclipse user here; I recently discovered the "Block Selection Mode" (Alt-Shift-A) that was added into Eclipse 3.5.   I tried it out, it's pretty neat--I can select a rectangle of text in my source code instead of selecting things a line at a time like I usually do.</p>
  
  <p>Apparently this feature is common in other editors too, under other names like "column edit mode", etc.  A lot of people seem to really love it, but I've got by without for a long time.</p>
  
  <p><strong>So my question is:  What kinds of things is this feature useful for?</strong>  </p>
  
  <p>The only one I can think of is inserting a comment characters (like // or #) in front of a chunk of text.  Also, I supposed if I had a bunch of variables names that were all lined up and I wanted to change the first characters for all of them at once.   But surely there's more to it than that?  I mean, when it comes to choosing an editor, this feature is apparently a deal-breaker for some people!</p>