+
+@item overlay_center
+This field holds the current overlay center position. @xref{Overlays}.
+
+@item enable_multibyte_characters
+This field holds the buffer's local value of
+@code{enable-multibyte-characters}---either @code{t} or @code{nil}.
+
+@item buffer_file_coding_system
+The value of @code{buffer-file-coding-system} in this buffer.
+
+@item file_format
+The value of @code{buffer-file-format} in this buffer.
+
+@item pt_marker
+In an indirect buffer, or a buffer that is the base of an indirect
+buffer, this holds a marker that records point for this buffer when the
+buffer is not current.
+
+@item begv_marker
+In an indirect buffer, or a buffer that is the base of an indirect
+buffer, this holds a marker that records @code{begv} for this buffer
+when the buffer is not current.
+
+@item zv_marker
+In an indirect buffer, or a buffer that is the base of an indirect
+buffer, this holds a marker that records @code{zv} for this buffer when
+the buffer is not current.
+
+@item file_truename
+The truename of the visited file, or @code{nil}.
+
+@item invisibility_spec
+The value of @code{buffer-invisibility-spec} in this buffer.
+
+@item last_selected_window
+This is the last window that was selected with this buffer in it, or @code{nil}
+if that window no longer displays this buffer.
+
+@item display_count
+This field is incremented each time the buffer is displayed in a window.
+
+@item left_margin_width
+The value of @code{left-margin-width} in this buffer.
+
+@item right_margin_width
+The value of @code{right-margin-width} in this buffer.
+
+@item indicate_empty_lines
+Non-@code{nil} means indicate empty lines (lines with no text) with a
+small bitmap in the fringe, when using a window system that can do it.
+
+@item display_time
+This holds a time stamp that is updated each time this buffer is
+displayed in a window.
+
+@item scroll_up_aggressively
+The value of @code{scroll-up-aggressively} in this buffer.
+
+@item scroll_down_aggressively
+The value of @code{scroll-down-aggressively} in this buffer.