It means control.
The key combination CTRL S is the shortcut/hotkey for Save.
The keyboard shortcut notation ctrl plus esc means you press the Control key concurrently with the Escape key. On a Windows PC, the Ctrl + Esc shortcut produces the Start Menu.
Press the Ctrl key and the ; key.
Ctrl+E
Left = Ctrl + L Centre = Ctrl + E Right = Ctrl + R
Use the Ctrl + F shortcut key combination.
ctrl + a : select all
Ctrl - L
On windows - Right CTRL
Ctrl + Shift Key + >On my Linux OS it is press down the Ctrl key and tap the = key repeatedly to increase the font, and Ctrl and - to decrease.
its ctrl+n
Cntrl N