MORE

Display output one screen at a time. MORE can be used to run any executable command (or batch file) and pause the screen output one screen at a time. MORE can also be used to TYPE the contents of any file to the screen.

Syntax
      command | MORE [/E [/C] [/P] [/S] [/Tn] [+n]]

      MORE [/E [/C] [/P] [/S] [/Tn] [+n]] < Pathname

      MORE /E [/C] [/P] [/S] [/Tn] [+n] [Pathname(s)]

Key
   command  : Any executable command or batch file

   Pathname : The file to be displayed. (if more than one separate with spaces)

   /E       : Enable extended features

   /E /C    : Clear screen before displaying page

   /E /P    : Expand FormFeed characters

   /E /S    : Squeeze multiple blank lines into a single line

   /E /Tn   : Expand tabs to n spaces (default 8)

   /E +n    : Start displaying the first file at line n

You can create an environment variable called %MORE% and use this to supply any of the above switches.
When MORE is used without any redirection symbols it will display the % complete e.g.

MORE /E myfile.txt
--More (17%) --

If extended features are enabled, (/E) the following keystrokes can be used at the -- More -- prompt:

  <space>   Display next page
  <return>  Display next line
  Q         Quit
  P n       Display next n lines
  S n       Skip next n lines
  F         Display next file
  =         Show line number
  ?         Show help line 

"less is more" - Ludwig Mies van der Rohe

Related:

TYPE - display files
ECHO - display variables
List - Text Display and Search Tool (Win 2K ResKit)
Equivalent bash command (Linux): more / less - Display output one screen at a time