diff --git a/standardbefehlssatz.lua b/standardbefehlssatz.lua
index 3c609eb..4d2c846 100644
--- a/standardbefehlssatz.lua
+++ b/standardbefehlssatz.lua
@@ -22,6 +22,30 @@ s = {
 		return true, {p, p ~= nil}
 	end,
 
+	copytable = function(params, thread)
+		if type(params[1]) ~= "string"
+		or type(params[2]) ~= "string" then
+			return false, "two strings expected"
+		end
+		local fromprefix = params[2] .. "."
+		local toprefix = params[1] .. "."
+		if fromprefix == toprefix then
+			return false, "origin and target table names must be different"
+		end
+		local tocopy = {}
+		local frmln = #fromprefix
+		for name,v in pairs(thread.vars) do
+			if name:sub(1, frmln) == fromprefix then
+				tocopy[#tocopy+1] = name:sub(frmln+1)
+			end
+		end
+		for i = 1,#tocopy do
+			local field = tocopy[i]
+			thread.vars[toprefix .. field] = thread.vars[fromprefix .. field]
+		end
+		return true
+	end,
+
 	add = function(params, faden)
 		local p1,p2 = unpack(params)
 		local t1 = type(p1)
diff --git a/util/standartbefehlssatz_doc.lua b/util/standartbefehlssatz_doc.lua
index 5de9b8c..e3335f1 100644
--- a/util/standartbefehlssatz_doc.lua
+++ b/util/standartbefehlssatz_doc.lua
@@ -15,6 +15,7 @@ local instr = {
 	{"mov", "<v to>, <e from>", "Copies from into to."},
 	{"xchg", "<v a>, <v b>", "Switches a with b."},
 	{"getvar", "<vs varname>[, <ve exists>]", "Sets varname to the current variable called <varname> if it's set. If exists is passed, it's set to a bool indicating whether the variable was set."},
+	{"copytable", "<s target>, <s origin>", "Copies ${origin}.* to ${target}.*."},
 	{"add", "<vn to>, <n from>", "to += from"},
 	{"add", "<vb to>[, <b ba>[, <b bb>[…]]]", "to indicates whether at least one of the arguments is true"},
 	{"add", "<vs to>, <s from>", "to = to .. from"},