Copy an Entire Directory in Linux

this is simple but I'm forgetful so heres how you copy an entire directory, its subdirectories, and files:

cp -R dirtocopy/ newdir/

Here's how to do the copy shown in the figure below. This copies the directory /home/jane, with all its files and subdirectories, and creates a subdirectory named jane in the current directory (.) :

cp -r /home/jane