P - display text with pagination and tab escape. The default value is 79. Tab stops beyond the last specified one are set by taking the difference between the last two tab positions and using that interval for all later tab stops. N, P sets every N positions. By default, tabs are set every four positions.
P displays the contents of a file on the terminal.
When displaying a number of files consecutively, P also pauses at the end of each file. When you're displaying more than one file, identifier headings are displayed at the beginning of each file. All options act globally and may be placed anywhere on the command line. What you get depends on what kind of terminal you are using. The escape sequence for the tab character is used only if -Tabs is in effect.