On 10 Jan 2010, at 04:20, Wilhelm Longshanks wrote:

I find "Shift Left" and "Intent Line" in "Text" menu, but I don't know the difference of the behaviors. Can anybody explain them to me?

Indent Line will indent it to the estimated level. It is more useful when selecting multiple lines (where each line is then adjusted individually).

I'm using "Shift Left" all the time, and I sometimes get forced to move to the next line after running the command.

This happens if the caret is at the end of the line due to how it is implemented, you can select the line first or ensure the caret is not last on the line to avoid this undesired behavior.