diff --git a/README.md b/README.md
index 4df3db5..a008a9c 100644
--- a/README.md
+++ b/README.md
@@ -2,7 +2,7 @@ Work in progress.
 
 An attempt to write a [Language Server Protocol](https://en.wikipedia.org/wiki/Language_Server_Protocol) server using XQuery 4.0 and the [BaseX websocket](https://docs.basex.org/main/WebSockets) feature.
 ## LSP Server
-* `webapp/lsp` The LSP implementation in XQuery using WebSockets  for transport and the [JSON-RPC](https://www.jsonrpc.org/specification) 2.0 API for message format.
+* `webapp/lsp` The LSP implementation in XQuery using WebSockets  for transport and the [JSON-RPC](https://www.jsonrpc.org/specification) 2.0 API for data format.
 ### Dev notes
 State is held in websocket attributes.
 
@@ -13,12 +13,17 @@ State is held in websocket attributes.
 |file-{uuid}|name of websocket attribute with textDocument|
 |parse-{uuid}|name of websocket attribute with parse tree XML|
 ## Sample html clients
-### Using `CodeMirror6`
+### Using `CodeMirror6` https://codemirror.net/
 * `webapp/static/codemirror` A test html page using the [CodeMirror6 editor](https://codemirror.net/)  that connects to the BaseX LSP instance
+
+#### uses
+* https://github.com/FurqanSoftware/codemirror-languageserver
+* https://hjr265.me/blog/codemirror-lsp/
+  
 ### Using `Ace Editor`
 * `webapp/static/ace` A test html page using the [Ace editor](https://ace.c9.io/)  that connects to the BaseX LSP instance
 
-## Uses
+#### Uses
 * https://github.com/mkslanc/ace-linters https://mkslanc.github.io/ace-linters/
 
 I needed `set NODE_OPTIONS=--max_old_space_size=8192` for build to complete
@@ -27,9 +32,9 @@ Or `node --max-old-space-size=8192 node_modules/webpack-dev-serve
 r/bin/webpack-dev-server.js`
 
 
-## Notes
+## Related links
 java -cp org.eclipse.lemminx-uber.jar org.eclipse.lemminx.XMLServerSocketLauncher`
-Using https://github.com/mkslanc/ace-linters https://mkslanc.github.io/ace-linters/
+
 
 Make a websocket server for lsp on port 3000
 https://mkslanc.github.io/ace-linters/websocket.html
@@ -38,5 +43,5 @@ http://localhost:3000/exampleServer
 
 https://github.com/mkslanc/ace-linters/blob/c1b317e01299016ac7da6588361228637f4eac25/packages/demo/websockets-lsp/server/server.ts
 
-https://www.jsonrpc.org/specification
+
 
diff --git a/docs/explore.xqbk b/docs/explore.xqbk
index 861444c..9854d1c 100644
--- a/docs/explore.xqbk
+++ b/docs/explore.xqbk
@@ -1 +1 @@
-{"cells":[{"kind":2,"language":"xquery","value":"(:<:)\r\n\r\nimport module namespace docs=\"lsp/docs\" at \"/srv/basex/webapp/lsp/docs.xqm\";"},{"kind":2,"language":"xquery","value":"ws:ids()"},{"kind":2,"language":"xquery","value":"let $sock:=foot(ws:ids())\r\nlet $f:=docs:list($sock)\r\nlet $t:=docs:get($sock,$f,\"textDocument\")\r\nreturn $t"}]}
\ No newline at end of file
+{"cells":[{"kind":2,"language":"xquery","value":"(:<:)\r\n\r\nimport module namespace docs=\"lsp/docs\" at \"/srv/basex/webapp/lsp/docs.xqm\";"},{"kind":2,"language":"xquery","value":"ws:ids()"},{"kind":2,"language":"xquery","value":"let $sock:=foot(ws:ids())\r\nlet $f:=docs:list($sock)\r\nlet $t:=docs:get($sock,$f,\"textDocument\")\r\nreturn $t"},{"kind":2,"language":"xquery","value":"let $sock:=foot(ws:ids())\r\nlet $f:=docs:list($sock)\r\nlet $t:=docs:get($sock,$f,\"parse\")\r\nreturn $t/self::ERROR"},{"kind":2,"language":"xquery","value":"let $sock:=foot(ws:ids())\r\nlet $f:=docs:list($sock)\r\nlet $t:=docs:get($sock,$f,\"textDocument\")?text\r\nreturn string-to-codepoints($t)=>index-of(10)"}]}
\ No newline at end of file
diff --git a/webapp/lsp/docs.xqm b/webapp/lsp/docs.xqm
index 9f46a20..d60c076 100644
--- a/webapp/lsp/docs.xqm
+++ b/webapp/lsp/docs.xqm
@@ -45,13 +45,17 @@ declare function docs:change(
 {
 let $uri:=$params?textDocument?uri
 let $key:=docs:key($socket,$uri,"textDocument")
+
 let $file:=if(exists($key))
            then ws:get($socket,$key)
-           else error("no file")
+           else error(xs:QName("docs:change"), "no file" || $uri)
+
 let $ver:=$params?textDocument?version
-let $text:=if($ver eq 1+ $file?version)
+let $IGNORE_VER:=true()
+let $text:=if($IGNORE_VER or $ver eq 1+ $file?version)
           then pos:apply-changes($file?text,$params?contentChanges)
-          else error("bad ver")
+          else error(xs:QName("docs:change"),`badver got {$ver} expecting: {1+ $file?version}`)
+
 let $file:=$file=>map:put("version",$ver)=>map:put("text",$text)
 
 return ( ws:set($socket,$key,$file)
@@ -80,7 +84,7 @@ ws:get($socket,"files",{})=>map:keys()
 };
 
 (: document info :)
-declare type docs:property as enum(
+declare type docs:Property as enum(
     "textDocument",
     "parse"
 );
@@ -89,7 +93,7 @@ declare type docs:property as enum(
 declare function docs:key(
     $socket as xs:string,
     $file as xs:string,
-    $property as docs:property
+    $property as docs:Property
 ) as xs:string?
 {
     ws:get($socket,"files")($file)($property)
@@ -99,7 +103,7 @@ declare function docs:key(
 declare function docs:get(
     $socket as xs:string,
     $file as xs:string,
-    $property as docs:property
+    $property as docs:Property
 ) as item()?
 {
     ws:get($socket,
@@ -117,6 +121,6 @@ declare function docs:parse(
   let $xml:= p:parse-Module($text)=>prof:time("⏱️ p:parse-Module " || $file)
   return (
     ws:set($socket,docs:key($socket,$file,"parse"),$xml),
-    lsp-diags:publish($file,$xml)
+    lsp-diags:publish($file, $text, $xml)
   )
 };
\ No newline at end of file
diff --git a/webapp/lsp/etc/capabilities.json b/webapp/lsp/etc/capabilities.json
index 007d2cb..055451b 100644
--- a/webapp/lsp/etc/capabilities.json
+++ b/webapp/lsp/etc/capabilities.json
@@ -7,11 +7,11 @@
         "documentSelector": [{ "language": "xquery" }]
       },
       "hoverProvider": false,
-      "documentSymbolProvider": true,
+      "documentSymbolProvider": false,
       "documentRangeFormattingProvider": false,
       "colorProvider": {},
-      "foldingRangeProvider": true,
-      "selectionRangeProvider": true,
+      "foldingRangeProvider": false,
+      "selectionRangeProvider": false,
       "documentLinkProvider": {},
        "serverInfo": {
             "name": "XQuery 4.0b Language Server",
diff --git a/webapp/lsp/jsonrpc.xqm b/webapp/lsp/jsonrpc.xqm
index 352dca2..11f41a2 100644
--- a/webapp/lsp/jsonrpc.xqm
+++ b/webapp/lsp/jsonrpc.xqm
@@ -6,7 +6,7 @@ module namespace rpc = 'rpc';
 import module namespace lsp-text = 'lsp-text' at "lsp-text.xqm";
 
 (: map methods to functions :)
-declare variable $rpc:methods:=map:merge((
+declare variable $rpc:Methods:=map:merge((
   map{
   "initialize" : rpc:method-initialize#1,
   "initialized" : rpc:method-initialized#1,
@@ -31,14 +31,17 @@ as map(*)?
   
 };
 
-(:~ send replay to $json :)
+(:~ send reply to $json message
+ get functions for methods
+ evaluate function with message
+ send any responses
+ :)
 declare
 function rpc:reply($json as map(*)) 
 as empty-sequence() {
-  let $method := $json?method
-  let $f :=$rpc:methods?($method)
+  let $f :=$rpc:Methods?($json?method)
   let $response := $f!.($json)
-  return if(exists($response)) then ws:send($response=>trace("REPLY: "),ws:id())
+  return $response!ws:send(.=>trace("REPLY: "),ws:id())
 };
 
 (:~ canned initialize response :)
diff --git a/webapp/lsp/lint.xqm b/webapp/lsp/lint.xqm
index 8e39c19..843a98e 100644
--- a/webapp/lsp/lint.xqm
+++ b/webapp/lsp/lint.xqm
@@ -2,30 +2,17 @@ module namespace lint="lsp/lint";
 (: 
     Describes a problem or hint for a piece of code.
 
-    from: number
+    from: number The start position of the relevant text.
+    to: number The end position. May be equal to from, though actually covering text is preferable.
+    severity: "error" | "hint" | "info" | "warning". The severity of the problem. This will influence how it is displayed.
 
-        The start position of the relevant text.
-    to: number
+    markClass⁠?: string When given, add an extra CSS class to parts of the code that this diagnostic applies to.
 
-        The end position. May be equal to from, though actually covering text is preferable.
-    severity: "error" | "hint" | "info" | "warning"
+    source⁠?: string An optional source string indicating where the diagnostic is coming from. You can put the name of your linter here, if applicable.
 
-        The severity of the problem. This will influence how it is displayed.
-    markClass⁠?: string
-
-        When given, add an extra CSS class to parts of the code that this diagnostic applies to.
-    source⁠?: string
-
-        An optional source string indicating where the diagnostic is coming from. You can put the name of your linter here, if applicable.
-    message: string
-
-        The message associated with this diagnostic.
-    renderMessage⁠?: fn(view: EditorView) → Node
-
-        An optional custom rendering function that displays the message as a DOM node.
-    actions⁠?: readonly Action[]
-
-        An optional array of actions that can be taken on this diagnostic.
+    message: string The message associated with this diagnostic.
 
+    renderMessage⁠?: fn(view: EditorView) → Node An optional custom rendering function that displays the message as a DOM node.
 
+    actions⁠?: readonly Action[] An optional array of actions that can be taken on this diagnostic.
 :)
\ No newline at end of file
diff --git a/webapp/lsp/lsp-diags.xqm b/webapp/lsp/lsp-diags.xqm
index c542de5..42d467e 100644
--- a/webapp/lsp/lsp-diags.xqm
+++ b/webapp/lsp/lsp-diags.xqm
@@ -1,17 +1,46 @@
 module namespace lsp-diags = 'lsp-diags';
 
-import module namespace docs="lsp/docs" at "docs.xqm";
 import module namespace pos="lsp/position" at "position.xqm";
 
+declare type lsp-diags:ParseResult as element(Module|ERROR);
+(:~
+from: number The start position of the relevant text.
+to: number The end position. May be equal to from, though actually covering text is preferable.
+severity: "error" | "hint" | "info" | "warning" The severity of the problem. This will influence how it is displayed.
+markClass⁠?: string When given, add an extra CSS class to parts of the code that this diagnostic applies to.
+source⁠?: string An optional source string indicating where the diagnostic is coming from. You can put the name of your linter here, if applicable.
+message: string The message associated with this diagnostic.
+renderMessage⁠?: fn(view: EditorView) → Node An optional custom rendering function that displays the message as a DOM node.
+actions⁠?: readonly Action[] An optional array of actions that can be taken on this diagnostic.
+    :)
+declare record lsp-diags:nostic(
+  range as pos:Range,
+  severity as  xs:integer, (: enum('error', 'hint', 'info', 'warning') :)
+  message as xs:string
+);
+
 declare function lsp-diags:publish(
     $uri as xs:string,
-    $xml as element(Module|ERROR))
+    $text as xs:string,
+    $xml as lsp-diags:ParseResult)
 as map(*){
- let $diagnostics:=[]
-  =>array:append(pos:nostic(pos:Range(pos:Position(0,1),pos:Position(0,3)),1,"A test"))
+ let $diagnostics:=if($xml/self::ERROR)
+                   then [lsp-diags:parse-error($text, $xml)]
+                   else []
 
  return {"jsonrpc": "2.0",
      "method":"textDocument/publishDiagnostics",
      "params":{"uri": $uri, "diagnostics": $diagnostics}
 }
 };
+
+(:~ 
+<ERROR b="10819" e="10820" o="234" s="43">syntax error, found '}' while expecting [S,'else'] at line 290, column 3: ...} }; ? return bookmark info for children of $outlineItem as s...</ERROR>
+:)
+declare function lsp-diags:parse-error($text as xs:string, $xml as element(ERROR))
+as map(*)?{
+
+lsp-diags:nostic(pos:Range(pos:toPosition($xml, $xml/@b), 
+                          pos:toPosition($xml, $xml/@e)),
+                1,$xml/string())
+};
\ No newline at end of file
diff --git a/webapp/lsp/position.xqm b/webapp/lsp/position.xqm
index a10a8ef..db11b01 100644
--- a/webapp/lsp/position.xqm
+++ b/webapp/lsp/position.xqm
@@ -40,14 +40,15 @@ as xs:string{
 declare function pos:resolvePosition($text as xs:string, $pos as map(*)) 
 as xs:integer
 {
-  let $nl:=characters($text)=>index-of(char("\n"))
+  let $nl:= index-of(string-to-codepoints($text),10)
+  let $_:=trace(count($nl),"lines ")
   let $s:=  while-do(
   map{"off":0,"line":0}, 
   fn($r, $i){$r?line < $pos?line},
   fn($r,$i){ let $next:=$nl[$i] 
              return if(empty($next))
                     then error(xs:QName("docs:range"),"bad line")
-                    else {"off": $next+1,"line":$r?line+1}=>trace("AA ") }
+                    else {"off": $next+1,"line":$r?line+1} }
 )
   let $off:= $s?off+$pos?character
   return if($off>string-length($text))
@@ -59,9 +60,11 @@ as xs:integer
 (:~  convert index into Position :)
 declare function pos:toPosition($text as xs:string, $index as xs:integer)
 as pos:Position {
-  let $nl:=characters($text)=>index-of(char("\n"))
+   let $nl:= index-of(string-to-codepoints($text),10)
+  let $_:=trace(count($nl),"lines ")
+  
   let $predicate:=fn($r, $i){
-      let $next:=$nl[$i=>trace("I ")] 
+      let $next:=$nl[$i] 
       return exists($next) and $next < $index
 }
         
@@ -73,19 +76,4 @@ as pos:Position {
 return pos:Position($s?line,  $index - $s?off)            
 };
  
-(:~
-from: number The start position of the relevant text.
-to: number The end position. May be equal to from, though actually covering text is preferable.
-severity: "error" | "hint" | "info" | "warning" The severity of the problem. This will influence how it is displayed.
-markClass⁠?: string When given, add an extra CSS class to parts of the code that this diagnostic applies to.
-source⁠?: string An optional source string indicating where the diagnostic is coming from. You can put the name of your linter here, if applicable.
-message: string The message associated with this diagnostic.
-renderMessage⁠?: fn(view: EditorView) → Node An optional custom rendering function that displays the message as a DOM node.
-actions⁠?: readonly Action[] An optional array of actions that can be taken on this diagnostic.
-    :)
-declare record pos:nostic(
-  range as pos:Range,
-  severity as  xs:integer, (: enum('error', 'hint', 'info', 'warning') :)
-  message as xs:string
-);
 
diff --git a/webapp/static/clients/codemirror/script.js b/webapp/static/clients/codemirror/script.js
index 4f1644c..82a8fc3 100644
--- a/webapp/static/clients/codemirror/script.js
+++ b/webapp/static/clients/codemirror/script.js
@@ -27,8 +27,13 @@ document.getElementById("connect").onclick = e => {
 document.getElementById("search").onclick = e => {
     lsp.openSearchPanel(view);
 };
-document.getElementById("lint").onclick = e => {
+document.getElementById("lint").onclick = async e => {
     console.log("word",view.state.wordAt(1));
+    const ser=document.getElementById("iServer").value;
+    //const transport = new WebTransport(ser);
+
+    // The connection can be used once ready fulfills
+    //await transport.ready;
     lsp.openLintPanel(view);
 };
 document.getElementById("load").onchange = e => {