I wonder if I can insert a new line without leaving normal mode. For example, I have two lines:this is line onethis is line twoAnd the cursor is on line one. Now I want a new line between line one and line two, like this:this is line onethis is line twoI know that when I am in normal mode, I can simply press o. But this would enter insert mode. How can I insert a new line like and stay in normal mode?
how to insert a newline without leaving normal mode
insert mode;normal mode
I use a mapping for that: Quickly insert an empty new line without entering insert mode    nnoremap <Leader>o o<Esc>    nnoremap <Leader>O O<Esc>This way you can insert a line under your cursor with <Leader>o and one on the previous line with <Leader>O. Note: One could argue that it requires as many keystrokes as o<Esc> but hopefully you choosed your leader to make this kind of mapping easy. Also I'm really not sure there is a built-in way to do this.