Several additional key-bindings and settings available on:
Main Menu\Options\Setup\Key Bindings (on last page)

 SPEED
  Speed Up             <PAD+> ; increase speed of the game by prescribed step
  Speed Down           <PAD-> ; decrease speed of the game by prescribed step
  Step of Speed Change "10"   ; step of the speed changing 
  Set Speed to Default <PAD*> ; sets speed of the game as default
 DEMOS                        ; Additional keys working during demos viewing
  Next Level           <PgDn> ; quick rewind to the next level
  Join                 <Alt>  ; interception of the control with resume recording feature (*1)

Additional settings are available here:
Main Menu\Options\Setup\Status Bar / HUD (on last pages)

 ADVANCED HUD SETTINGS ; HUD settings
  Show GameSpeed       ; show speed of the game (100 by default)
  Show LevelTime       ; total time and level time
  Secret Areas         ; to inform about secret areas location
  Smart Totals         ; advanced information about killed, injuired :) and secrets

 DEMOS                 ; Demos viewing settings
  Smooth Playing       ; smooth turns durig viewing demos
  Smooth Factor        ; (1-min..16-max), default value is 6

 MOVEMENTS             ; Movement settings
  Smooth Movement      ; removes 35 FPS restriction without loss of compatibility
  Always Mouselook     ; mouselook toggle (available in GLBoom only)
  Invert Mouse         ; invert mouse for mouselook (available in GLBoom only)
  Field of View        ; (available in GLBoom only)
  Permanent Strafe50   ; strafe50 turns on permanent strafe 50
  Strafe50 On Turns    ; strafe 50 on turns (impossible with original engine) 

 CHANGE PALETTE        ; Palette settings:
  On Pain              ; red eyes on pain
  On Bonus             ; blinking on items pick-up
  On Powers            ; various visual effects on powerups taking

 BUMP MAPPING          ; Bump mapping settings (available in GLBoom only)
  Use Detail Texture   ; global setting
  For Walls            ; use detail texture for walls
  For Flats            ; use detail texture for floors and ceilings

Additional and enhanced parameters of the command line:
"-warp x"
"-framescapture tick fileprefix" - grabbing of the screenshots to frmXXXX.tga
"-skipsec x" - skip X secs during viewing of the demo

Examples:
  glboom -iwad doom.wad -playdemo e1uv-405.lmp -warp 1 6
  glboom -playdemo 30uv1441.lmp -warp 29

  glboom -playdemo 30uv1441.lmp -skipsec 192
  glboom -iwad doom.wad -playdemo e1uv-405.lmp -skipsec 12.5

  glboom -timedemo e4uv-232.lmp -framescapture 1 frm

(*1) See "record.bat" to understand how "record append" feature works
