Font Lock}). It is called with two arguments, @var{start} and
@var{end}, which are the starting and ending positions of the text on
which it should act. It is allowed to call @code{syntax-ppss} on any
-position before @var{end}, but if it calls @code{syntax-ppss} on some
-position and later modifies the buffer on some earlier position,
-then it is its responsibility to call @code{syntax-ppss-flush-cache}
-to flush the now obsolete info from the cache.
+position before @var{end}, but if a Lisp program calls
+@code{syntax-ppss} on some position and later modifies the buffer at
+some earlier position, then it is that program's responsibility to
+call @code{syntax-ppss-flush-cache} to flush the now obsolete info
+from the cache.
@strong{Caution:} When this variable is non-@code{nil}, Emacs removes
@code{syntax-table} text properties arbitrarily and relies on