The URL you are referring to is a generic IOS command reference, and it does not take platform differences into account. It is not specific to your router.
Sadly, neither of the x600, x800 or x900 routers support VACLs by themselves (on their routed ports - it would not make sense, anyway), and I strongly doubt these VACLs are supported on (E)HWIC switching modules that can be plugged into these routers. Perhaps the SM switching modules supported on x900 series do have VACL support because these are autonomous switches with their own IOS image - but the 3600 series router never supported VACLs.
VACLs are commonly supported only on switches such as Catalyst 2960 (undocumented so far but working), 3560, 3750, etc.
None that can be emulated in Dynamips/Dynagen/GNS3.
On real equipment, VACLs are supported on switches: Catalyst 2960 (so far not officially documented but tested to be working), 3550, 3560, 3750, 3850, 4500, 6500 (not an exhaustive listing of course). Also, to my best knowledge, Nexus switches should support VACLs.
We are pleased to announce availability of Beta software for 16.6.3. 16.6.3 will be the second rebuild on the 16.6 release train targeted towards Catalyst 9500/9400/9300/3850/3650 switching platforms. We are looking for early feedback from custome...