0.0:Display the contents of a text file one screen at a time 0.1:Usage 0.2:command 0.3:file 0.4:Available keys 0.5:Nn 0.6:Next file 0.7:Qq 0.8:Quit program 0.9:Space 0.10:Next page 1.0:Not a recognized option 1.1:No such file 1.2:Cannot open file 2.0:More 2.1: