Fix #7579. Add docstrings to msvcrt and adjust some wording for bytes.
diff --git a/Doc/library/msvcrt.rst b/Doc/library/msvcrt.rst
index d968833..7636b6f 100644
--- a/Doc/library/msvcrt.rst
+++ b/Doc/library/msvcrt.rst
@@ -90,12 +90,12 @@
 
 .. function:: getch()
 
-   Read a keypress and return the resulting character.  Nothing is echoed to the
-   console.  This call will block if a keypress is not already available, but will
-   not wait for :kbd:`Enter` to be pressed. If the pressed key was a special
-   function key, this will return ``'\000'`` or ``'\xe0'``; the next call will
-   return the keycode.  The :kbd:`Control-C` keypress cannot be read with this
-   function.
+   Read a keypress and return the resulting character as a byte string.
+   Nothing is echoed to the console.  This call will block if a keypress
+   is not already available, but will not wait for :kbd:`Enter` to be
+   pressed. If the pressed key was a special function key, this will
+   return ``'\000'`` or ``'\xe0'``; the next call will return the keycode.
+   The :kbd:`Control-C` keypress cannot be read with this function.
 
 
 .. function:: getwch()
@@ -116,7 +116,7 @@
 
 .. function:: putch(char)
 
-   Print the character *char* to the console without buffering.
+   Print the byte string *char* to the console without buffering.
 
 
 .. function:: putwch(unicode_char)
@@ -126,8 +126,8 @@
 
 .. function:: ungetch(char)
 
-   Cause the character *char* to be "pushed back" into the console buffer; it will
-   be the next character read by :func:`getch` or :func:`getche`.
+   Cause the byte string *char* to be "pushed back" into the console buffer;
+   it will be the next character read by :func:`getch` or :func:`getche`.
 
 
 .. function:: ungetwch(unicode_char)