I'm new to the Arduino IDE but I find the way it handles the leftmost tab (sketch) a bit odd. From what I can see, the filename (sketchbook name) is directly linked to the name of the first sketch. You can add or delete other sketches to/from the sketchbook but if you delete the first sketch it deletes the entire sketchbook. If you read my thread here http://www.arduino.cc/cgi-bin/yabb2/YaBB.pl?num=1192321284
you'll see how I lost a bunch of code this way
I think it would be nice to be able to name the sketchbook independently of the name of the first sketch and to be able to delete any sketch in the file, including the first one, without affecting the rest of the file.
It would also be nice to be able to move tabs around to rearrange them but that's a separate issue.
Anyway, not sure if this is easily changed, just throwing it out there. Now that I know this behaviour, I can deal with it, but I wouldn't be surprised if other noobs go through the same thing when they first start using the program.