more command helps you browse text files in Unix and Linux. Instead of throwing complete contents of the possibly large text file into terminal window, more shows you paginated content – fills up the screen and then waits for a key press to show the next screen’s worth of content.
Paging is another word for pagination – the process of showing text content page-by-page, or in case of computers and remote SSH sessions, screen by screen.
Paging with more is intuitive and simple: more command determines the current terminal window size (number of columns and lines) and shows you just the right amount of lines from the specified text time. You then need to press Space to get the next set of lines from the same file.
Modern implementations of the more command allow you normal text scrolling using arrow keys on the keyboard: you can move up and down by one line.