Lynx invokes a built-in Line Editor
  for entering strings in response to prompts, in forms, and for
  email messages if an external editor has not been defined.
  Alternative key bindings are normally available (unless
  Lynx was configured with
  --disable-alt-bindings). If available, they may be
  selected via the “o”ptions menu, or by editing
  lineedit_mode in the “.lynxrc” file.
Two such alternative key bindings, which may be available on your system, are the
You can always see the current set of key-bindings in Lynx by opening the special URL LYNXEDITMAP:. This page is provided for those not using Lynx.
Note: setting emacs/vi keys ON has no effect on line-editor bindings.
This is the Default Binding keymap:
     ENTER  Input complete        -  RETURN
     TAB    Input complete        -  TAB, Do
     ABORT  Input cancelled       -  Ctrl-G, Ctrl-O, (Ctrl-C on some systems)
     ERASE  Erase the line        -  Ctrl-U
     BACK   Cursor back     char  -  Left-Arrow
     FORW   Cursor forward  char  -  Right-Arrow
     BACKW  Cursor back     word  -  Ctrl-P
     FORWW  Cursor forward  word  -  Ctrl-N
     BOL    Go to begin of  line  -  Ctrl-A, Home, Find
     EOL    Go to end   of  line  -  Ctrl-E, End,  Select
     DELP   Delete prev     char  -  Backspace, Delete, Remove
     DELN   Delete next     char  -  Ctrl-D, Ctrl-R (see note 1)
     DELPW  Delete prev     word  -  Ctrl-B
     DELNW  Delete next     word  -  Ctrl-F
     DELEL  Delete to end of line -  Ctrl-_
     UPPER  Upper case the line   -  Ctrl-T
     LOWER  Lower case the line   -  Ctrl-K
     LKCMD  Invoke cmd prompt     -  Ctrl-V (in form text fields, only) (see note 2)
     SWMAP  Switch input keymap   -  Ctrl-^ (if compiled in)
  These are special commands for use only in textarea fields (see note 3):
          Textarea external edit  - Ctrl-X e
          Insert file in textarea - Ctrl-X i
          Grow textarea           - Ctrl-X g
  
    TPOS    Transpose characters                   -  Ctrl-t
    SETMARK Set mark at current position in line   -  Ctrl-@
    XPMARK  Exchange current position with mark    -  Ctrl-x Ctrl-x
    KILLREG Kill region between mark and position  -  Ctrl-x Ctrl-w (see note 3)
    YANK    Insert text last killed (with KILLREG) -  Ctrl-y
  Here is a little textarea for practice:
Ctrl-key means
  Control+key.
  Ctrl-x key means first
  Control+x, then key.
  M-key means Meta+key,
  where Meta is a modifier that can be entered in a variety of
  ways:
  
A few key names may be less familiar now than when Lynx was first written: Find, Select and Remove. The XTerm FAQ shows some typical keypad layouts of emulators for VT220 and other DEC terminals.
The VT220 did not have a “backspace” key but Lynx's default bindings mention it. Both ASCII BS (backspace) and DEL are bound by default to the same functions. DEL (occasionally referred to as RUBOUT) is not the same as Delete: the former is a single character while the latter is usually a sequence of characters.