Okay, I'l try to explain this using a little graphics... 

Lets say you have five lines.

Quote:

1
2
3
4
5

Now, I want to insert an empty line between 2 and 3. So I place the cursor at the start of line three and hit enter - and it makes the empty line after the three - between 3 and 4!

Also, if line two starts with tabs, it seems to "double up" on the tabs - if there was two tabs at the beginning of the line, it will apparantly put in two extra ones, and still do the empty line below the current line...

it's a little different to work with, I think...