The man (manual) utility displays pages from the system documentation on the terminal. This documentation is useful if you know what utility you want to use but are not exactly sure how it works.
If the command is known ahead of time, type
machine_name> man command
for help on that command. Note that machine_name> denotes the prompt that whatever machine you are using supplies you - you do not need to type that.
machine_name> man -k word
will give you a list of utilities related to word. Another way to obtain this information is to type apropos word. You may use the command man man to find out more about the man utility.
man xyx | col -b | lpr -Phpr1 (or lpr -Phpr2, etc.)
The 'col -b' will take care of the formattting.