For what it's worth, I often put a tiny sticker on the bottom of the monitor that just gives the two keys for getting into the BIOS menu and the Boot menu. It doesn't need to remain there for long till it soaks in. Then again, some brands of machines will display a prompt at boot time with those keys, if the BIOS setting is enabled (Lenovo, etc).
For what it's worth, I often put a tiny sticker on the bottom of the monitor that just gives the two keys for getting into the BIOS menu and the Boot menu. It doesn't need to remain there for long till it soaks in. Then again, some brands of machines will display a prompt at boot time with those keys, if the BIOS setting is enabled (Lenovo, etc).