I have vim set-up to use spaces in place of tabs. Sometimes you need to use an actual tab e.g. editing a Makefile. Now whilst it’s possible to change settings so that tabs are used for specific files, a quick tip to remember is to simply type in insert mode:
That is Ctrl and “V” and hit the tab key, et voila you’ve entered an actual tab.
A nice trick for having screen open a new tab in the same directory as the one you’re currently in. To use it add it to your .screenrc
# Open new window in current dir.
bind c stuff "screen -X chdir \$PWD;screen^M"
bind ^c stuff "screen -X chdir \$PWD;screen^M"