use _ to visualize spaces

Author: methane

peps/pep-0822.rst

@@ -20,21 +20,23 @@ This PEP proposes to add a feature that automatically removes indentation from m
 
 Dedented multiline strings use a new prefix "d" (shorthand for "dedent") before the opening quote of a multiline string literal.
 
+Example (spaces are visualized as `_`):
+
 .. code-block:: python
 
     def hello_paragraph() -> str:
-        return d"""
-            <p>
-              Hello, World!
-            </p>
-        """
+    ____return d"""
+    ________<p>
+    __________Hello, World!
+    ________</p>
+    ____"""
 
 The closing triple quotes control how much indentation would be removed.
-In the above example, the returned string will contain three lines:
+In the above example, the returned string will contain three lines
 
-* ``"    <p>\n"`` (four leading spaces)
-* ``"      Hello, World!\n"`` (six leading spaces)
-* ``"    </p>\n"`` (four leading spaces)
+* ``"____<p>\n"`` (four leading spaces)
+* ``"______Hello, World!\n"`` (six leading spaces)
+* ``"____</p>\n"`` (four leading spaces)
 
 
 Motivation