Change history of the immutability of values

Rev	Date	Modified by	Minor edit	Spam	WikiText	Revert to
4	2011-12-22 14:51:33	dkf	no	no	4	4
3	2010-06-28 16:13:05	AMG	no	no	3	3
2	2010-06-28 16:09:27	AK	no	no	2	2
1	2010-06-28 15:02:42	dgp	no	no	1	1
0	2010-06-28 14:35:52	AMG	no	no	0	0