Standard Key Bindings

The framework reserves a small set of keys and gives every mounted buffer a navigation map; everything else is application data declared through :keys or a session :keymap. The tables below list the standard bindings by context. Host-declared keys shadow the mounted buffer's bindings of the same key, framework keys cannot be rebound, and any key with no binding falls through to the buffer's remaining maps.

Framework keys

Key	Effect
Escape	Dismiss the nearest enabled Host with :on-dismiss in the scope chain.
M-g	Enter region selection; the selector reads one key.
C-g	Keep Emacs's native keyboard quit; it never dismisses a Host.
?	Open the read-only *ETAF Help* buffer for the current scope.
TAB, S-TAB	Move one focus stop forward or backward.
Arrow keys	Run etaf-direction: the nearest :on-direction handler, a separator or slider step, region adjacency, Ebox spatial movement, then one viewport scroll step.
Home, End	Reach the group's or scope's first and last focus stop.

Mounted buffer keys

The bindings come from ebox-buffer-mode-map, the keymap of a mounted canvas.

Key	Effect
n, p	Scroll one line down or up.
C-v, SPC, <next>	Scroll a page down, also through the scroll-up-command remap.
M-v, S-SPC, <prior>	Scroll a page up, also through the scroll-down-command remap.
Wheel events	Scroll the canvas; the same bindings apply in the fringes and margins.
Horizontal wheel events	Scroll sideways.
TAB, S-TAB	Move one focus stop.
RET, <return>	Activate the focused control.
Arrows, C-n, C-p, C-b, C-f	Move focus with ebox-focus-direction; scroll when no stop lies that way.
Home, M-<	Reach the group's or scope's first focus stop.
End, M->	Reach the last focus stop.
q	Quit the window.
Motion events	Dispatch hover content through mouse-movement.
Primary press and drag	Move point; the canvas has no text selection.
Any unbound printing key	Suppressed, so a mounted canvas never becomes editable.

Region selector keys

The selector is the modal one-key interaction behind M-g; it stays open until one key ends it.

Key	Effect
A region's hint key	Focus that region's effective entry.
Arrow keys; h, j, k, l under the vim scheme	Move to the adjacent region in that direction.
?	Repeat the hint with an explanation.
Escape	Cancel, leaving focus alone.
C-g	Abort like any native quit.
Any other key	Stay open and show a notice naming the key.

Input session keys

While a session edits a field, ordinary Emacs editing commands run against the hidden value buffer, and the commands in ebox-input-edit-commands — newline, open-line, newline-and-indent, electric-newline-and-maybe-indent, completion-at-point, indent-for-tab-command and yank — edit the value when a session :keymap binds them. Any other session keymap binding runs in the mounted buffer, which is how a field can bind RET to submit while C-j or Shift-RET inserts a newline. A press places the caret and a drag extends the selection; a double press selects the word, a triple press the whole value.

Notes

• etaf-direction-scheme is arrows (the default) or vim; under vim the four letters dispatch as direction keys in navigation state. Set it through etaf-set-direction-scheme, which reports Host :keys and region hint conflicts before changing the scheme.
• The command palette is deliberately not a key: reach it with M-x etaf-palette, which runs a labelled command or focuses a named control.
• While a native input session edits, keys fall through the framework layer to the session's own editing commands.