When a buffer uses Scheme Interaction mode, the keymap mred:global-scheme-interaction-mode-keymap the keymap mred:global-scheme-mode-keymap is inserted into the chain of keymaps from the buffer's private keymap (before the global keymap). This keymap is created at system startup time and initialized by (mred:setup-global-scheme-interaction-mode-keymap mred:global-scheme-interaction-mode-keymap).
The mred:setup-global-scheme-interaction-mode-keymap procedure chains the global Scheme mode keymap -- mred:global-scheme-mode-keymap -- to the argument keymap and installs the following functions: