diff --git a/src/sys/nact.cpp b/src/sys/nact.cpp
index 65d10dc..70ea1e0 100644
--- a/src/sys/nact.cpp
+++ b/src/sys/nact.cpp
@@ -302,6 +302,38 @@ void NACT::execute()
 	}
 }
 
+void NACT::cmd_label_jump()
+{
+	int next_addr = sco.getw();
+	sco.jump_to(next_addr);
+
+	output_console("\n@%x:", next_addr);
+}
+
+void NACT::cmd_label_call()
+{
+	int next_addr = sco.getw();
+	sco.label_call(next_addr);
+
+	output_console("\n\\%x:", next_addr);
+}
+
+void NACT::cmd_page_jump()
+{
+	int next_page = cali();
+	sco.page_jump(next_page, 2);
+
+	output_console("\n&%d:", next_page);
+}
+
+void NACT::cmd_page_call()
+{
+	int next_page = cali();
+	sco.page_call(next_page);
+
+	output_console("\n%%%d:", next_page);
+}
+
 void NACT::message(uint8 terminator)
 {
 	char buf[200];
diff --git a/src/sys/nact.h b/src/sys/nact.h
index 45b08ae..d728561 100644
--- a/src/sys/nact.h
+++ b/src/sys/nact.h
@@ -130,10 +130,10 @@ protected:
 	virtual void cmd_calc() = 0;
 
 	virtual void cmd_branch() = 0;
-	virtual void cmd_label_jump() = 0;
-	virtual void cmd_label_call() = 0;
-	virtual void cmd_page_jump() = 0;
-	virtual void cmd_page_call() = 0;
+	void cmd_label_jump();
+	void cmd_label_call();
+	void cmd_page_jump();
+	void cmd_page_call();
 
 	virtual void cmd_set_menu() = 0;
 	virtual void cmd_open_menu() = 0;
@@ -280,10 +280,6 @@ public:
 protected:
 	void cmd_calc() override;
 	void cmd_branch() override;
-	void cmd_label_jump() override;
-	void cmd_label_call() override;
-	void cmd_page_jump() override;
-	void cmd_page_call() override;
 	void cmd_set_menu() override;
 	void cmd_open_menu() override;
 	void cmd_set_verbobj() override;
@@ -331,10 +327,6 @@ public:
 protected:
 	void cmd_calc() override;
 	void cmd_branch() override;
-	void cmd_label_jump() override;
-	void cmd_label_call() override;
-	void cmd_page_jump() override;
-	void cmd_page_call() override;
 	void cmd_set_menu() override;
 	void cmd_open_menu() override;
 	void cmd_set_verbobj() override;
@@ -376,10 +368,6 @@ public:
 protected:
 	void cmd_calc() override;
 	void cmd_branch() override;
-	void cmd_label_jump() override;
-	void cmd_label_call() override;
-	void cmd_page_jump() override;
-	void cmd_page_call() override;
 	void cmd_set_menu() override;
 	void cmd_open_menu() override;
 	void cmd_set_verbobj() override;
diff --git a/src/sys/nact_sys1.cpp b/src/sys/nact_sys1.cpp
index bf4ebf9..a47f5a2 100644
--- a/src/sys/nact_sys1.cpp
+++ b/src/sys/nact_sys1.cpp
@@ -232,38 +232,6 @@ void NACT_Sys1::cmd_branch()
 	output_console("\n{%d:", condition);
 }
 
-void NACT_Sys1::cmd_label_jump()
-{
-	int next_addr = sco.getw();
-	sco.jump_to(next_addr);
-
-	output_console("\n@%x:", next_addr);
-}
-
-void NACT_Sys1::cmd_label_call()
-{
-	int next_addr = sco.getw();
-	sco.label_call(next_addr);
-
-	output_console("\n\\%x:", next_addr);
-}
-
-void NACT_Sys1::cmd_page_jump()
-{
-	int next_page = cali();
-	sco.page_jump(next_page, 2);
-
-	output_console("\n&%d:", next_page);
-}
-
-void NACT_Sys1::cmd_page_call()
-{
-	int next_page = cali();
-	sco.page_call(next_page);
-
-	output_console("\n%%%d:", next_page);
-}
-
 void NACT_Sys1::cmd_set_menu()
 {
 	if(ags->draw_menu) {
diff --git a/src/sys/nact_sys2.cpp b/src/sys/nact_sys2.cpp
index 27fa5d7..9d049f5 100644
--- a/src/sys/nact_sys2.cpp
+++ b/src/sys/nact_sys2.cpp
@@ -270,38 +270,6 @@ void NACT_Sys2::cmd_branch()
 	output_console("\n{%d:", condition);
 }
 
-void NACT_Sys2::cmd_label_jump()
-{
-	int next_addr = sco.getw();
-	sco.jump_to(next_addr);
-
-	output_console("\n@%x:", next_addr);
-}
-
-void NACT_Sys2::cmd_label_call()
-{
-	int next_addr = sco.getw();
-	sco.label_call(next_addr);
-
-	output_console("\n\\%x:", next_addr);
-}
-
-void NACT_Sys2::cmd_page_jump()
-{
-	int next_page = cali();
-	sco.page_jump(next_page, 2);
-
-	output_console("\n&%d:", next_page);
-}
-
-void NACT_Sys2::cmd_page_call()
-{
-	int next_page = cali();
-	sco.page_call(next_page);
-
-	output_console("\n%%%d:", next_page);
-}
-
 void NACT_Sys2::cmd_set_menu()
 {
 	if(ags->draw_menu) {
diff --git a/src/sys/nact_sys3.cpp b/src/sys/nact_sys3.cpp
index 680a6db..bbe796c 100644
--- a/src/sys/nact_sys3.cpp
+++ b/src/sys/nact_sys3.cpp
@@ -45,38 +45,6 @@ void NACT_Sys3::cmd_branch()
 	output_console("\n{%d: T:%4x, F:%4x", condition, t_addr, f_addr);
 }
 
-void NACT_Sys3::cmd_label_jump()
-{
-	int next_addr = sco.getw();
-	sco.jump_to(next_addr);
-
-	output_console("\n@%x:", next_addr);
-}
-
-void NACT_Sys3::cmd_label_call()
-{
-	int next_addr = sco.getw();
-	sco.label_call(next_addr);
-
-	output_console("\n\\%x:", next_addr);
-}
-
-void NACT_Sys3::cmd_page_jump()
-{
-	int next_page = cali();
-	sco.page_jump(next_page, 2);
-
-	output_console("\n&%d:", next_page);
-}
-
-void NACT_Sys3::cmd_page_call()
-{
-	int next_page = cali();
-	sco.page_call(next_page);
-
-	output_console("\n%%%d:", next_page);
-}
-
 void NACT_Sys3::cmd_set_menu()
 {
 	if(ags->draw_menu) {