A buffer-mode is a type of mode that can be enabled and disabled per-buffer, and whose effects are confined to an individual buffer. Some buffer-modes' function is to install a temporary keymap, like quote-mode and quote-next-mode. Other buffer-modes do more, like caret-mode.
For information about how to write a buffer-mode, see Writing Buffer Modes.
1. Page Mode
A page-mode is a subtype of buffer-mode. Page-modes are automatically enabled and disabled according to the buffer's current location.
For information about the page-modes that come built into Conkeror, see Page Modes.
For information about how to write a page-mode, see Writing Page Modes.