"hchild" (a list of horizontally-arrayed children), "vchild" (a
list of vertically-arrayed children), and "buffer" (the buffer
contained in a leaf window). Exactly one of these will be
- non-nil. Remember that "horizontally-arrayed" means
+ non-`nil'. Remember that "horizontally-arrayed" means
"side-by-side" and "vertically-arrayed" means "one above the
other".
7. Leaf windows also have markers in their `start' (the first buffer
position displayed in the window) and `pointm' (the window's
stashed value of `point'--see above) fields, while combination
- windows have nil in these fields.
+ windows have `nil' in these fields.
8. The list of children for a window is threaded through the `next'
and `prev' fields of each child window.
Extents can be zero-length, and will end up that way if their
endpoints are explicitly set that way or if their detachable property
-is nil and all the text in the extent is deleted. (The exception is
+is `nil' and all the text in the extent is deleted. (The exception is
open-open zero-length extents, which are barred from existing because
there is no sensible way to define their properties. Deletion of the
text in an open-open extent causes it to be converted into a closed-open