Line states

In the gutter bar, you can see colored thin bars next to line numbers: green, yellow. It is line states. They show state of lines:

• usual lines (not changed)
• changed lines
• newly added lines
• changed or added, and file was saved after it

Line states help to see which lines were edited in the last time. Also CudaExt plugin gives few commands to jump over lines with some line states (go to next/previous for several states: for changed, for added, for changed+added).