@node Screen Lines
@subsection Motion by Screen Lines
+@cindex screen lines, moving by
The line functions in the previous section count text lines, delimited
only by newline characters. By contrast, these functions count screen
@deffn Command up-list &optional arg escape-strings no-syntax-crossing
This function moves forward out of @var{arg} (default 1) levels of
parentheses. A negative argument means move backward but still to a
-less deep spot. If @var{escape-strings} is non-nil (as it is
+less deep spot. If @var{escape-strings} is non-@code{nil} (as it is
interactively), move out of enclosing strings as well. If
-@var{no-syntax-crossing} is non-nil (as it is interactively), prefer
+@var{no-syntax-crossing} is non-@code{nil} (as it is interactively), prefer
to break out of any enclosing string instead of moving to the start of
a list broken across multiple strings. On error, location of point is
unspecified.