diff --git a/README.md b/README.md
index deb88aa..6f556d2 100644
--- a/README.md
+++ b/README.md
@@ -143,6 +143,34 @@ EOF
 You can remove your lspconfig.lua and use the hooks of navigator.lua. As the
 navigator will bind keys and handler for you. The LSP will be loaded lazily based on filetype.
 
+A treesitter only mode. In some cases LSP is buggy or not available, you can also us treesitter
+standalone
+
+```vim
+call plug#begin('~/.vim/plugged')
+
+Plug 'ray-x/guihua.lua', {'do': 'cd lua/fzy && make' }
+Plug 'ray-x/navigator.lua'
+
+" Plug 'hrsh7th/nvim-compe' and other plugins you commenly use...
+
+" optional, if you need treesitter symbol support
+Plug 'nvim-treesitter/nvim-treesitter', {'do': ':TSUpdate'}
+" optional:
+Plug 'nvim-treesitter/nvim-treesitter-refactor' " this provides "go to def" etc
+
+call plug#end()
+
+lua <<EOF
+require'navigator'.setup()
+EOF
+
+
+```
+
+
+
+
 Nondefault configuration example:
 
 ```lua
@@ -244,6 +272,21 @@ e.g
 require'navigator'.setup({on_attach = function(client, bufnr) require 'illuminate'.on_attach(client)})
 ```
 
+## Highlight
+
+Highlight I am using:
+
+* LspReferenceRead, LspReferenceText and LspReferenceWrite are used for `autocmd CursorHold <buffer> lua vim.lsp.buf.document_highlight()`
+That is where you saw current symbol been highlighted.
+
+* GHListDark and GHTextViewDark is used for floating listvew and TextView. They are be based on current background
+(Normal) and PmenuSel
+
+* In future, I will use NormalFloat for floating view. But ATM, most of colorscheme does not define NormalFloat
+
+You can override above highlight to fit your current colorscheme
+
+
 ## Screenshots
 
 colorscheme: [aurora](https://github.com/ray-x/aurora)
diff --git a/lua/navigator/dochighlight.lua b/lua/navigator/dochighlight.lua
index a272e98..7aa4813 100644
--- a/lua/navigator/dochighlight.lua
+++ b/lua/navigator/dochighlight.lua
@@ -24,7 +24,7 @@ local function add_locs(bufnr, result)
     _NG_hi_list[symbol] = {range = {}}
   end
   if _NG_hi_list[symbol] ~= nil then
-    log("already added", symbol)
+    trace("already added", symbol)
     _NG_hi_list[symbol].range = {}
     -- vim.fn.matchdelete(hid)
   end
@@ -37,7 +37,7 @@ local function nohl()
   for key, value in pairs(_NG_hi_list) do
     if value.hi_ids ~= nil then
       for _, v in ipairs(value.hi_ids) do
-        log("delete", v)
+        trace("delete", v)
         vim.fn.matchdelete(v)
       end
       _NG_hi_list[key].hi_ids = nil
@@ -85,7 +85,7 @@ local function hi_symbol()
     total_match = tonumber(p)
   end
   if total_match == totalref then -- same number as matchpos
-    log(total_match, "use matchadd()")
+    trace(total_match, "use matchadd()")
     local k = range[1].kind
     local hi_name = string.format("NGHiReference_%i_%i", _NG_ref_hi_idx, k)
     local m = string.format("\\<%s\\>", symbol_wd)
@@ -107,7 +107,7 @@ local function hi_symbol()
       end
       local w = value.range['end'].character - value.range.start.character
       local hi_name = string.format("NGHiReference_%i_%i", _NG_ref_hi_idx, k)
-      log(hi_name, {l, cs, w})
+      trace(hi_name, {l, cs, w})
       local m = vim.fn.matchaddpos(hi_name, {{l, cs, w}}, 10)
       table.insert(_NG_hi_list[symbol].hi_ids, m)
     end
@@ -153,7 +153,7 @@ local function handle_document_highlight(_, _, result, _, bufnr, _)
 end
 -- modify from vim-illuminate
 local function goto_adjent_reference(opt)
-  log(opt)
+  trace(opt)
   opt = vim.tbl_extend("force", {forward = true, wrap = true}, opt or {})
 
   local bufnr = vim.api.nvim_get_current_buf()
@@ -187,7 +187,7 @@ local function goto_adjent_reference(opt)
     next = refs[nexti].range
   end
 
-  log(next)
+  trace(next)
   vim.api.nvim_win_set_cursor(0, {next.start.line + 1, next.start.character})
   return next
 end
diff --git a/lua/navigator/gui.lua b/lua/navigator/gui.lua
index 70a5fcc..e2faa17 100644
--- a/lua/navigator/gui.lua
+++ b/lua/navigator/gui.lua
@@ -189,9 +189,8 @@ function M.new_list_view(opts)
           pos = 1
         end
         local l = idx(data, pos) -- bug it not work with fzy filter
-        log(data)
         if l.filename ~= nil then
-          trace("openfile ", l.filename, l.lnum, l.col)
+          log("openfile ", l.filename, l.lnum, l.col)
           util.open_file_at(l.filename, l.lnum, l.col)
         end
       end,
diff --git a/lua/navigator/lspclient/clients.lua b/lua/navigator/lspclient/clients.lua
index 3c9e3ad..0bfbaee 100644
--- a/lua/navigator/lspclient/clients.lua
+++ b/lua/navigator/lspclient/clients.lua
@@ -20,7 +20,11 @@ end
 
 local has_lsp, lspconfig = pcall(require, "lspconfig")
 if not has_lsp then
-  error("loading lsp config")
+  return {
+    setup = function()
+      print("loading lsp config failed LSP may not working correctly")
+    end
+  }
 end
 local highlight = require "navigator.lspclient.highlight"
 
diff --git a/lua/navigator/lspclient/mapping.lua b/lua/navigator/lspclient/mapping.lua
index dd18771..1126171 100644
--- a/lua/navigator/lspclient/mapping.lua
+++ b/lua/navigator/lspclient/mapping.lua
@@ -10,21 +10,25 @@ local event_hdlrs = {
   {ev = "CursorMoved", func = "clear_references()"}
 }
 
+local double = {"╔", "═", "╗", "║", "╝", "═", "╚", "║"}
+local single = {"╭", "─", "╮", "│", "╯", "─", "╰", "│"}
 local key_maps = {
   {key = "gr", func = "references()"}, {mode = "i", key = "<M-k>", func = "signature_help()"},
   {key = "gs", func = "signature_help()"}, {key = "g0", func = "document_symbol()"},
   {key = "gW", func = "workspace_symbol()"}, {key = "<c-]>", func = "definition()"},
-  {key = "gD", func = "declaration()"},
+  {key = "gD", func = "declaration({ popup_opts = { border = 'single' }})"},
   {key = "gp", func = "require('navigator.definition').definition_preview()"},
   {key = "gT", func = "require('navigator.treesitter').buf_ts()"},
-  {key = "GT", func = "require('navigator.treesitter').bufs_ts()"}, {key = "K", func = "hover()"},
+  {key = "GT", func = "require('navigator.treesitter').bufs_ts()"},
+  {key = "K", func = "hover({ popup_opts = { border = single }})"},
   {key = "ga", mode = "n", func = "code_action()"},
   {key = "ga", mode = "v", func = "range_code_action()"}, {key = "<Leader>re", func = "rename()"},
   {key = "<Leader>gi", func = "incoming_calls()"}, {key = "<Leader>go", func = "outgoing_calls()"},
   {key = "gi", func = "implementation()"}, {key = "gt", func = "type_definition()"},
   {key = "gL", func = "diagnostic.show_line_diagnostics()"},
   {key = "gG", func = "require('navigator.diagnostics').show_diagnostic()"},
-  {key = "]d", func = "diagnostic.goto_next()"}, {key = "[d", func = "diagnostic.goto_prev()"},
+  {key = "]d", func = "diagnostic.goto_next({ popup_opts = { border = single }})"},
+  {key = "[d", func = "diagnostic.goto_next({ popup_opts = { border = single }})"},
   {key = "]r", func = "require('navigator.treesitter').goto_next_usage()"},
   {key = "[r", func = "require('navigator.treesitter').goto_previous_usage()"},
   {key = "<C-LeftMouse>", func = "definition()"}, {key = "g<LeftMouse>", func = "implementation()"},
@@ -174,7 +178,7 @@ function M.setup(user_opts)
     vim.lsp.handlers["textDocument/signatureHelp"] = require"navigator.signature".signature_handler
   end
 
-  -- vim.lsp.handlers["textDocument/hover"]  = require 'navigator.hover'.hover_handler
+  vim.lsp.handlers["textDocument/hover"] = vim.lsp.with(vim.lsp.handlers.hover, {border = single})
 end
 
 return M
diff --git a/lua/navigator/symbols.lua b/lua/navigator/symbols.lua
index 80139f4..d631494 100644
--- a/lua/navigator/symbols.lua
+++ b/lua/navigator/symbols.lua
@@ -116,7 +116,7 @@ function M.document_symbol_handler(err, _, result, _, bufnr)
         child.range = c.range
         local ckind = symbol_kind(child.kind)
         child.selectionRange = c.selectionRange
-        child.fname = fname
+        child.filename = fname
         child.uri = uri
         child.lnum = c.range.start.line + 1
         child.detail = c.detail or ""