Remove things specific to the old Macintosh, and spell "Mac OS X" consistently.
diff --git a/Doc/reference/lexical_analysis.rst b/Doc/reference/lexical_analysis.rst
index 9da27b5..b548722 100644
--- a/Doc/reference/lexical_analysis.rst
+++ b/Doc/reference/lexical_analysis.rst
@@ -75,7 +75,7 @@
A physical line is a sequence of characters terminated by an end-of-line
sequence. In source files, any of the standard platform line termination
sequences can be used - the Unix form using ASCII LF (linefeed), the Windows
-form using the ASCII sequence CR LF (return followed by linefeed), or the
+form using the ASCII sequence CR LF (return followed by linefeed), or the old
Macintosh form using the ASCII CR (return) character. All of these forms can be
used equally, regardless of platform.