This is a summary of the various commands available, and the corresponding keypress in the original keyset.

Walking

         7  8  9                        
         4     6                         
         1  2  3                            

Running

 shift + 7  8  9                        
         4     6                         
         1  2  3       

Command Summary

  a  Aim a wand                           A  Activate an artifact
  b  Browse a book                        B  Bash a door
  c  Close a door                         C  Character description
  d  Drop an item                         D  Disarm a trap
  e  Equipment list                       E  Eat some food
  f  Fire an item                         F  Fuel your lantern/torch
  g  Stay still (flip pickup)             G  Gain new spells/prayers
  h  (unused)                             H  (unused)
  i  Inventory list                       I  Observe an item
  j  Jam a door                           J  (unused)
  k  Destroy an item                      K  (unused)
  l  Look around                          L  Locate player on map
  m  Cast a spell or pray a prayer        M  Full dungeon map
  n  Repeat last command                  N  (unused)
  o  Open a door or chest                 O  (unused)
  p  Pray a prayer or cast a spell        P  (unused)
  q  Quaff a potion                       Q  Quit (commit suicide)
  r  Read a scroll                        R  Rest for a period
  s  Search for traps/doors               S  Start/stop searching
  t  Take off equipment                   T  Dig a tunnel
  u  Use a staff                          U  (unused)
  v  Throw an item                        V  Version info
  w  Wear/wield equipment                 W  (unused)
  x  (unused)                             X  (switch weapon macro)
  y  (unused)                             Y  (unused)
  z  Zap a rod                            Z  (unused)
  !  Interact with system                ^A  (special - debug command)
  @  Interact with macros                ^B  (unused)
  #  (unused)                            ^C  (special - break)
  $  (unused)                            ^D  (unused)
  %  Interact with visuals               ^E  Toggle choice window
  ^  (special - control key)             ^F  Repeat level feeling
  &  Interact with colors                ^G  (unused)
  *  Target monster or location          ^H  (unused)
  (  Load screen dump                    ^I  (special - tab)
  )  Dump screen dump                    ^J  (special - linefeed)
  {  Inscribe an object                  ^K  (unused)
  }  Uninscribe an object                ^L  (unused)
  [  Use talents                         ^M  (special - return)
  ]  end shapechange                     ^N  (unused)
  -  Walk (flip pickup)                  ^O  (unused)
  _  Enter store                         ^P  Show previous messages
  +  Alter grid                          ^Q  (unused)
  =  Set options                         ^R  Redraw the screen
  ;  Walk (normal pickup)                ^S  Save and don't quit
  :  Take notes                          ^T  (unused)
  '  (unused)                            ^U  (unused)
  "  Enter a user pref command           ^V  Repeat last command
  ,  Stay still (normal pickup)          ^W  (special - wizard mode)
  <  Go up staircase                     ^X  Save and quit
  .  Run                                 ^Y  (unused)
  >  Go down staircase                   ^Z  (special - borg command)
  \  (special - bypass keymap)            |  (unused)
  `  (special - escape)                   ~  Check knowledge
  /  Identify symbol                      ?  Help