--- a/SHA1Stream.st	Mon Dec 19 19:08:28 2016 +0100
+++ b/SHA1Stream.st	Tue Dec 20 22:32:17 2016 +0100
@@ -312,29 +312,30 @@
     This may be used as checksum or for generating cryptographic signatures.
 
     Notice (2005):
-	Be aware that SHA-1 is considered broken and may not be appropriate in some applications.
-	Especially it should no longer be used for security stuff.
+        Be aware that SHA-1 is considered broken and may not be appropriate in some applications.
+        Especially it should no longer be used for security stuff.
 
     performance: roughly
-	  120400 Kb/s on a 2.5Ghz 64X2 Athlon 4800+ (64bit)
-	   47400 Kb/s on a 2Ghz Duo (old measure)
-	    9580 Kb/s on a 400Mhz PIII
-	    3970 Kb/s on a 300Mhz Sparc
+          150 Mb/s on a 2007 MAC Powerbook (2.6Ghz I7-Duo)
+          120400 Kb/s on a 2.5Ghz 64X2 Athlon 4800+ (64bit)
+           47400 Kb/s on a 2Ghz Duo (old measure)
+            9580 Kb/s on a 400Mhz PIII
+            3970 Kb/s on a 300Mhz Sparc
 
     [author:]
-	Stefan Vogel
+        Stefan Vogel
 
     [see also:]
-	MD5Stream
-	SHA256Stream SHA512Stream (in libcrypt)
+        MD5Stream
+        SHA256Stream SHA512Stream (in libcrypt)
 
     [class variables:]
-	HashSize        size of returned hash value
-	ContextSize     (implementation) size of hash context
+        HashSize        size of returned hash value
+        ContextSize     (implementation) size of hash context
 
     [instance variables:]
-	hashContext     (implementation)
-			internal buffer for computation of the hash value
+        hashContext     (implementation)
+                        internal buffer for computation of the hash value
 "
 !