Commands that are too long to display on a printed page are shown with "\" characters at the ends of intermediate lines:

mount -r -F hsfs \
/dev/dsk/c0t6d0s0 /cdrom

On a Linux system, you may type the "\" characters, pressing Enter after each. However, on a Windows machine you must enter the whole command without the "\" characters; continue typing if the command is too long to fit in the command prompt window and press Enter only at the end of the complete command.