First batch of signature documentation changes; using default argument syntax where applicable.
diff --git a/Doc/library/base64.rst b/Doc/library/base64.rst
index ef9c02a..1e78953 100644
--- a/Doc/library/base64.rst
+++ b/Doc/library/base64.rst
@@ -23,7 +23,7 @@
The modern interface provides:
-.. function:: b64encode(s[, altchars])
+.. function:: b64encode(s, altchars=None)
Encode a string use Base64.
@@ -36,7 +36,7 @@
The encoded string is returned.
-.. function:: b64decode(s[, altchars])
+.. function:: b64decode(s, altchars=None)
Decode a Base64 encoded string.
@@ -78,7 +78,7 @@
is returned.
-.. function:: b32decode(s[, casefold[, map01]])
+.. function:: b32decode(s, casefold=False, map01=None)
Decode a Base32 encoded string.
@@ -105,7 +105,7 @@
*s* is the string to encode. The encoded string is returned.
-.. function:: b16decode(s[, casefold])
+.. function:: b16decode(s, casefold=False)
Decode a Base16 encoded string.