One such alternate key binding, which may be available on your system, is the Alternate Bindings keymap.
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, Ctrl-X 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 - Ctrl-H, DELETE, Remove DELN Delete next  char - Ctrl-D, Ctrl-R 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)  SWMAP Switch input keymap - Ctrl-^  "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.  Follow Ctrl-V with the key "e" bound to the EDIT function, to edit the form's textarea field using an external editor.