diff --git a/.vscode/settings.json b/.vscode/settings.json
index 13498c2..d566f68 100644
--- a/.vscode/settings.json
+++ b/.vscode/settings.json
@@ -1,5 +1,6 @@
 {
     "basexTools.xquery.profile": "basex-10",
     "basexTools.xquery.showHovers": false,
+    "basexTools.xquery.executionDefault": "basexclient",
    
 }
\ No newline at end of file
diff --git a/.xqdoca b/.xqdoca
index df58509..fd65659 100644
--- a/.xqdoca
+++ b/.xqdoca
@@ -1,4 +1,4 @@
 <xqdoca xmlns="urn:quodatum:xqdoca" version="1.0">
-    <source>jars/</source>
+    <source>src/</source>
     <target>docs/xqdoc/</target>
 </xqdoca>
\ No newline at end of file
diff --git a/docs/pdf.xqbk b/docs/pdf.xqbk
new file mode 100644
index 0000000..76e2a23
--- /dev/null
+++ b/docs/pdf.xqbk
@@ -0,0 +1 @@
+{"cells":[{"kind":2,"language":"xquery","value":"import module namespace pdfbox=\"org.expkg_zone58.Pdfbox3\";\r\nlet $a:=pdfbox:open(\"C:\\Users\\mrwhe\\git\\expkg-zone58\\pdfbox\\data\\1e\\gpg-book\\2-5-1\\B4541C-TRD\\255894---Book_File-Web_PDF_9798400668005_486272.pdf\")\r\nreturn pdfbox:labels($a)"}]}
\ No newline at end of file
diff --git a/package.json b/package.json
index 58a8beb..2aebc76 100644
--- a/package.json
+++ b/package.json
@@ -22,11 +22,11 @@
   "expkg_zone58": {
     "namespace": "org.expkg_zone58.Pdfbox3",
     "main-class": "org.apache.pdfbox.pdmodel.PDDocument",
-    "maven": [
-      "org/apache/pdfbox/pdfbox/3.0.4/pdfbox-3.0.4.jar",
-      "org/apache/pdfbox/pdfbox-io/3.0.4/pdfbox-io-3.0.4.jar",
-      "org/apache/pdfbox/fontbox/3.0.4/fontbox-3.0.4.jar",
-      "commons-logging/commons-logging/1.3.4/commons-logging-1.3.4.jar"
+    "maven2": [
+      "org.apache.pdfbox:pdfbox:3.0.4",
+      "org.apache.pdfbox:pdfbox-io:3.0.4",
+      "org.apache.pdfbox:fontbox:3.0.4",
+      "commons-logging:commons-logging:1.3.4"
     ]
 
   }
diff --git a/scripts/build.xqm b/scripts/build.xqm
index a4e40d3..34e81a0 100644
--- a/scripts/build.xqm
+++ b/scripts/build.xqm
@@ -94,7 +94,7 @@ as xs:string{
 
 declare function build:xar-create()
 as xs:base64Binary{
-  let $_:=build:maven-download($build:PKG?expkg_zone58?maven=>array:flatten(),$build:base || "jars/")
+  let $_:=build:maven-download($build:PKG?expkg_zone58?maven2=>array:flatten(),$build:base || "jars/")
   let $entries:=
             build:xar-add(map{},build:jars("content"),build:jars("download")!build:content(.))
             =>build:xar-add("content/Pdfbox3.xqm",build:content("src/Pdfbox3.xqm"))
@@ -124,27 +124,45 @@ as xs:string{
 
 declare function build:jars($style as xs:string)
 as xs:string*{
-let $src:=$build:PKG?expkg_zone58?maven=>array:flatten()
-let $names:= $src!replace(.,"^.*/","")
+let $artifacts:=$build:PKG?expkg_zone58?maven2=>array:flatten()
+let $names:= $artifacts!build:maven-slug(.)!file:name(.)
 return switch($style)
 case "name" return $names
 case "download" return $names!concat("jars/",.)
 case "content" return $names!concat("content/",.)
-default return $src
+default return $names
 };
 
 (:~ download $files from $urls to  $destdir:)
 declare variable $build:REPO as xs:string external :="https://repo1.maven.org/maven2/";
-declare function build:maven-download($urls as xs:string*,$destdir as xs:string)
+
+declare function build:maven-download($artifacts as xs:string*,$destdir as xs:string)
 as empty-sequence(){
     file:create-dir($destdir),    
-    for $f in $urls
-    let $dest:=$destdir || replace($f,"^.*/","") 
+    for $id in $artifacts
+    let $slug:=build:maven-slug($id)
+    let $dest:=$destdir || file:name($slug) 
     where not(file:exists($dest))
-    return build:write-binary($dest, fetch:binary(resolve-uri($f,$build:REPO)
+    return build:write-binary($dest, fetch:binary(resolve-uri($slug,$build:REPO)
            =>trace("Download: ")))
 };
 
+(:~ non-rooted url for maven artifact :)
+declare function build:maven-slug($artifact as xs:string)
+as xs:string{
+   
+   let $parts:=if(matches($artifact,'[^:]+:[^:]+:[^:]+'))
+               then tokenize($artifact,":")
+               else error(xs:QName('build:maven-slug'),"invalid format required 'groupId:id:version'")
+  
+    return (
+            translate($parts[1],".","/"),
+            $parts[2],
+            $parts[3],
+            string-join(($parts[2] , "-" , $parts[3] , ".jar"),"")
+    )=>string-join("/")
+};
+
 (:~ write-binary, creating dir if required :)
 declare function build:write-binary($dest as xs:string,$contents as xs:base64Binary?)
 as empty-sequence(){
diff --git a/src/Pdfbox3.xqm b/src/Pdfbox3.xqm
index 081eb19..dafdf7f 100644
--- a/src/Pdfbox3.xqm
+++ b/src/Pdfbox3.xqm
@@ -98,7 +98,7 @@ as xs:base64Binary{
          =>convert:integers-to-base64()
 };
 
-(: release references to $pdf:)
+(:~ release references to $pdf:)
 declare function pdfbox:close($pdf as item())
 as empty-sequence(){
   (# db:wrapjava void #) {
@@ -112,7 +112,7 @@ as xs:integer{
   PDDocument:getNumberOfPages($pdf)
 };
 
-(:~ render of $pdf page to image
+(:~ pdf page as image (zero is cover)
 options.format="bmp jpg png gif" etc, options.scale= 1 is 72 dpi?? :)
 declare function pdfbox:page-image($pdf as item(),$pageNo as xs:integer,$options as map(*))
 as xs:base64Binary{
@@ -284,6 +284,7 @@ as element(outline)?{
          else ()
 };
 
+(:~ recursive ouutline map to XML :)
 declare %private function pdfbox:bookmark-xml($outline as map(*)*)
 as element(bookmark)*
 {
@@ -355,7 +356,7 @@ as xs:string{
   return (# db:checkstrings #) {PDFTextStripper:getText($tStripper,$pdf)}
 };
 
-(:~ return size of $pageNo zero based :)
+(:~ return size of $pageNo (zero is cover :)
 declare function pdfbox:page-size($pdf as item(), $pageNo as xs:integer)
 as xs:string{
   PDDocument:getPage($pdf, $pageNo)
@@ -363,7 +364,7 @@ as xs:string{
   =>PDRectangle:toString()
 };
 
-(:~  version of  Apache Pdfbox in use  e.g. "3.0.4" :)
+(:~  version of Apache Pdfbox in use  e.g. "3.0.4" :)
 declare function pdfbox:version()
 as xs:string{
   Q{java:org.apache.pdfbox.util.Version}getVersion()