diff --git a/apps/cli/cli_show.c b/apps/cli/cli_show.c
index 0ce29730..62421190 100644
--- a/apps/cli/cli_show.c
+++ b/apps/cli/cli_show.c
@@ -865,8 +865,8 @@ cli_show_version(clicon_handle h,
                  cvec         *vars,
                  cvec         *argv)
 {
-    fprintf(stdout, "Clixon: %s\n", CLIXON_VERSION_STRING);
-    fprintf(stdout, "CLIgen: %s\n", CLIGEN_VERSION);
+    cligen_output(stdout, "Clixon: %s\n", CLIXON_VERSION_STRING);
+    cligen_output(stdout, "CLIgen: %s\n", CLIGEN_VERSION);
     return 0;
 }
 
diff --git a/test/test_cli_pipe.sh b/test/test_cli_pipe.sh
index c0c100d3..2f82c58b 100755
--- a/test/test_cli_pipe.sh
+++ b/test/test_cli_pipe.sh
@@ -1,7 +1,6 @@
 #!/usr/bin/env bash
 # CLIgen output pipe functions
 # Note, | must be escaped as \| otherwise shell's pipe is used (w possibly same result)
-# XXX Autocli does not work
 
 # Magic line must be first in script (see README.md)
 s="$_" ; . ./lib.sh || if [ "$s" = $0 ]; then exit 0; else return 0; fi
@@ -115,12 +114,11 @@ EOF
 
 cat <<EOF > $clidir/treeref.cli
 CLICON_MODE="treeref";
-CLICON_PIPETREE="|mypipe";
+CLICON_PIPETREE="|mypipe"; # implicit
 implicit("Show configuration"), cli_show_auto_mode("candidate", "xml", true, false);
 explicit("Show configuration"), cli_show_auto_mode("candidate", "xml", true, false);{
     @|mypipe, cli_show_auto_mode("candidate", "xml", true, false);
 }
-
 EOF
 
 cat <<EOF > $clidir/clipipe.cli
diff --git a/test/test_cli_pipe_multi.sh b/test/test_cli_pipe_multi.sh
new file mode 100755
index 00000000..9561da79
--- /dev/null
+++ b/test/test_cli_pipe_multi.sh
@@ -0,0 +1,178 @@
+#!/usr/bin/env bash
+# CLIgen output pipe functions with multiple trees and specs
+# 1. Multiple pipe files: pipe_common + pipe_show where the latter is a superset
+# 2. Implicit pipe and explicit in same file where explicit overrides
+# 3. Multiple trees where sub-tree (@datamodel) inherits from treeref
+
+# Magic line must be first in script (see README.md)
+s="$_" ; . ./lib.sh || if [ "$s" = $0 ]; then exit 0; else return 0; fi
+
+APPNAME=example
+
+# include err() and new() functions and creates $dir
+
+cfg=$dir/conf_yang.xml
+fyang=$dir/clixon-example.yang
+clidir=$dir/clidir
+fin=$dir/in
+
+if [ ! -d $clidir ]; then
+    mkdir $clidir
+fi
+
+cat <<EOF > $cfg
+<clixon-config xmlns="http://clicon.org/config">
+  <CLICON_CONFIGFILE>$cfg</CLICON_CONFIGFILE>
+  <CLICON_YANG_DIR>${YANG_INSTALLDIR}</CLICON_YANG_DIR>
+  <CLICON_YANG_MAIN_FILE>$fyang</CLICON_YANG_MAIN_FILE>
+  <CLICON_BACKEND_DIR>/usr/local/lib/$APPNAME/backend</CLICON_BACKEND_DIR>
+  <CLICON_CLISPEC_DIR>$clidir</CLICON_CLISPEC_DIR>
+  <CLICON_CLI_DIR>/usr/local/lib/$APPNAME/cli</CLICON_CLI_DIR>
+  <CLICON_CLI_MODE>$APPNAME</CLICON_CLI_MODE>
+  <CLICON_SOCK>/usr/local/var/$APPNAME/$APPNAME.sock</CLICON_SOCK>
+  <CLICON_BACKEND_PIDFILE>/usr/local/var/$APPNAME/$APPNAME.pidfile</CLICON_BACKEND_PIDFILE>
+  <CLICON_XMLDB_DIR>/usr/local/var/$APPNAME</CLICON_XMLDB_DIR>
+</clixon-config>
+EOF
+
+cat <<EOF > $fyang
+module clixon-example{
+  yang-version 1.1;
+  namespace "urn:example:clixon";
+  prefix ex;
+  /* Generic config data */
+  container table{
+     list parameter{
+        key name;
+        leaf name{
+           type string;
+        }
+        leaf value{
+           type string;
+        }
+     }
+  }
+}
+EOF
+
+cat <<EOF > $clidir/example.cli
+CLICON_MODE="example";
+CLICON_PROMPT="%U@%H %W> ";
+CLICON_PIPETREE="|common"; # implicit
+
+# Autocli syntax tree operations
+edit @datamodel, cli_auto_edit("datamodel");
+up, cli_auto_up("datamodel");
+top, cli_auto_top("datamodel");
+set @datamodel, cli_auto_set();
+delete("Delete a configuration item") {
+      @datamodel, cli_auto_del(); 
+      all("Delete whole candidate configuration"), delete_all("candidate");
+}
+commit("Commit the changes"), cli_commit();
+show("Show a particular state of the system"){
+   version("Show version"), cli_show_version("candidate", "text", "/");
+   configuration("Show configuration"), cli_show_auto_mode("candidate", "xml", true, false);{
+      @|show, cli_show_auto_mode("candidate", "xml", true, false);
+      @datamodelshow, cli_show_auto("candidate", "xml", true, false, "report-all");
+   }
+   autocli("Generated tree") @datamodelshow, cli_show_auto("candidate", "xml", true, false, "report-all");
+}
+EOF
+
+cat <<EOF > $clidir/common.cli
+CLICON_MODE="|common:|show";
+\| { 
+   grep <arg:string>, pipe_grep_fn("-e", "arg");
+   except <arg:string>, pipe_grep_fn("-v", "arg");
+   tail <arg:string>, pipe_tail_fn("-n", "arg");
+   count, pipe_wc_fn("-l");
+}
+EOF
+
+cat <<EOF > $clidir/show.cli
+CLICON_MODE="|show"; # Must start with |
+\| { 
+   showas {
+     xml, pipe_showas_fn("xml");
+     json, pipe_showas_fn("json");
+     text, pipe_showas_fn("text");
+   }
+}
+EOF
+
+new "test params: -f $cfg"
+if [ $BE -ne 0 ]; then
+    new "kill old backend"
+    sudo clixon_backend -z -f $cfg
+    if [ $? -ne 0 ]; then
+        err
+    fi
+    new "start backend -s init -f $cfg"
+    start_backend -s init -f $cfg
+fi
+
+new "wait backend"
+wait_backend
+
+new "Add entry x"
+expectpart "$($clixon_cli -1 -f $cfg set table parameter x value a)" 0 "^$"
+
+new "Add entry y"
+expectpart "$($clixon_cli -1 -f $cfg set table parameter y value b)" 0 "^$"
+
+new "Commit"
+expectpart "$($clixon_cli -1 -f $cfg commit)" 0 "^$"
+
+# 1. Multiple pipe files: pipe_common + pipe_show where the latter is a superset
+new "multiple files: show menu contains common items"
+echo "$clixon_cli -1 -f $cfg show config \| count"
+expectpart "$($clixon_cli -1 -f $cfg show config \| count)" 0 10
+
+# 2. Implicit pipe and explicit in same file where explicit overrides
+new "Implicit default command"
+expectpart "$(echo "show version \| ?" | $clixon_cli -f $cfg 2> /dev/null)" 0 count --not-- showas
+
+new "Explicit override"
+expectpart "$(echo "show configuration \| ?" | $clixon_cli -f $cfg 2> /dev/null)" 0 count showas
+
+# 3. Multiple trees where sub-tree (@datamodel) inherits from treeref
+new "sub-tree default implicit"
+expectpart "$(echo "set table \| ?" | $clixon_cli -f $cfg 2> /dev/null)" 0 count --not-- showas
+
+new "sub-tree explicit"
+expectpart "$(echo "show config table \| ?" | $clixon_cli -f $cfg 2> /dev/null)" 0 count showas
+
+# History error: second command affected by first
+# show configuration | count is OK
+cat <<EOF > $fin
+show configuration table | count
+set table | showas xml
+EOF
+new "Explicit followed by implicit"
+expectpart "$(cat $fin | $clixon_cli -f $cfg 2>&1)" 0 "set table | showas xml\": Unknown command" --not-- "<value>a</value>"
+
+cat <<EOF > $fin
+set table parameter y value nisse | count
+show configuration table | showas xml
+EOF
+new "Implicit followed by explicit"
+expectpart "$(cat $fin | $clixon_cli -f $cfg 2>&1)" 0 "<value>a</value>" --not-- "Unknown command"
+
+if [ $BE -ne 0 ]; then
+    new "Kill backend"
+    # Check if premature kill
+    pid=$(pgrep -u root -f clixon_backend)
+    if [ -z "$pid" ]; then
+        err "backend already dead"
+    fi
+    # kill backend
+    stop_backend -f $cfg
+fi
+
+rm -rf $dir
+
+unset mode
+
+new "endtest"
+endtest
diff --git a/yang/clixon/clixon-autocli@2023-09-01.yang b/yang/clixon/clixon-autocli@2023-09-01.yang
index ebb14b25..229c1259 100644
--- a/yang/clixon/clixon-autocli@2023-09-01.yang
+++ b/yang/clixon/clixon-autocli@2023-09-01.yang
@@ -43,7 +43,7 @@ module clixon-autocli{
 
     revision 2023-09-01 {
         description
-            "Added argument to alias
+            "Added argument to alias extension
              Released in Clixon 6.3";
     }
     revision 2023-05-01 {