http://lynx.invisible-island.net/lynx2.8.5/lynx_help/keystrokes/alt_edit_help

Lynx Line Editor Alternative Key Binding

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. Additional alternative key-bindings can be offered by configuring with --enable-alt-bindings or by adding them in LYEditmap.c before compiling Lynx. If available, they may be selected via the 'o'ptions menu, or by editing lineedit_mode in the '.lynxrc' file.

Note: setting emacs/vi keys ON has no direct effect on line-editor bindings.

This is the Alternative 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,  Ctrl-B
     FORW   Cursor forward  char  -  Right-Arrow, Ctrl-F
     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  -  Ctrl-H, DELETE, Remove
     DELN   Delete next [1] char  -  Ctrl-D
     DELPW  Delete prev     word  -  Ctrl-R
     DELNW  Delete next     word  -  Ctrl-T
     DELEL  Delete to end of line -  Ctrl-K

     UPPER  Upper case the line   -  Ctrl-^
     LOWER  Lower case the line   -  Ctrl-_

     LKCMD  Invoke cmd prompt     -  Ctrl-V (in form text fields, only) [2]

Special commands for use only in textarea fields[3]:

          Textarea external edit  - Ctrl-X e
          Insert file in textarea - Ctrl-X i
          Grow textarea           - Ctrl-X g

[1] "next" means the character "under" a box or underline style cursor; it
     means "to the immediate right of" an I-beam (between characters) type
     cursor.

[2]  Follow Ctrl-V with any recognized key command, to "escape" from a text
     input field.

[3]  For other key combinations using Ctrl-X as a prefix key, see the
     Help page for the Bash-Like Binding.