In order to use any feature of the package, wincom-mode must be enabled:
You can also add (wincom-mode) to your initialization file, or
enable it through the customize interface.
When wincom-mode is enabled, window IDs are shown as mode line
lighters of the form <ID> (by default, See ID display), and
other-window (C-x o) is remapped to wincom-select.
wincom-select, and any other window command, starts window
selection (provided there are more than wincom-minimum windows,
See Window commands). During window selection, any window in the
current wincom-scope (See Customization) can be selected by
pressing the sequence of keys corresponding to its displayed ID.
Alternatively, you can use any binding in wincom-command-map,
unless it is shadowed by a window ID.
Select the window corresponding to ID in the current scope
(See Customization) (wincom-select).
Delete the window corresponding to ID in the current scope
(wincom-delete).
Make the window corresponding to ID in the current scope the sole
window of its frame (wincom-delete-other).
Split the window corresponding to ID in the current scope from below
(wincom-split-window-below). This window command accepts a
prefix argument (with the same semantics as split-window-below).
Split the window corresponding to ID in the current scope from the right
(wincom-split-window-right). This window command accepts a
prefix argument (with the same semantics as split-window-right).
Display the buffer of the next command in the window corresponding to
ID in the current scope (wincom-selected-window-prefix). This
window command is only available when
display-buffer-override-next-command is available (Emacs 28+).
Swap the states of the current window and the window corresponding to
ID in the current scope (wincom-swap).
Switch to the minibuffer if it’s active (wincom-select-minibuffer).
See Window commands for information regarding defining new commands.