diff --git a/changelog.md b/changelog.md
index afb92d26..eb203747 100644
--- a/changelog.md
+++ b/changelog.md
@@ -1,10 +1,14 @@
-Lite XL is following closely [rxi/lite](https://github.com/rxi/lite) but with some enhancements.
-
 This files document the changes done in Lite XL for each release.
 
-### next release
+### 1.16.11
+
+When opening directories with too many files lite-xl now keep diplaying files and directories in the treeview.
+The application remains functional and the directories can be explored without using too much memory.
+In this operating mode the files of the project are not indexed so the command "Core: Find File" will act as the "Core: Open File" command.
+The "Project Search: Find" will work by searching all the files present in the project directory even if they are not indexed.
+
+Implemented changing fonts per syntax group by @liquidev.
 
-[#126](https://github.com/franko/lite-xl/issues/126): Implemented changing fonts per syntax group.
 Example user module snippet that makes all comments italic:
 
 ```lua
@@ -15,6 +19,12 @@ local italic = renderer.font.load("italic.ttf", 14)
 style.syntax_fonts["comment"] = italic
 ```
 
+Improved indentation behavior by @adamharrison.
+
+Fix bug with close button not working in borderless window mode.
+
+Fix problem with normalization of filename for opened documents.
+
 ### 1.16.10
 
 Improved syntax highlight system thanks to @liquidev and @adamharrison.
diff --git a/data/core/commands/core.lua b/data/core/commands/core.lua
index a7d9030d..ac30fe20 100644
--- a/data/core/commands/core.lua
+++ b/data/core/commands/core.lua
@@ -66,6 +66,9 @@ command.add(nil, {
   end,
 
   ["core:find-file"] = function()
+    if core.project_files_limit then
+      return command.perform "core:open-file"
+    end
     local files = {}
     for dir, item in core.get_project_files() do
       if item.type == "file" then
diff --git a/data/core/commands/doc.lua b/data/core/commands/doc.lua
index d1f1b261..9f4ec0a5 100644
--- a/data/core/commands/doc.lua
+++ b/data/core/commands/doc.lua
@@ -33,33 +33,6 @@ local function doc_multiline_selection(sort)
   return line1, col1, line2, col2, swap
 end
 
-
-local function insert_at_start_of_selected_lines(text, skip_empty)
-  local line1, col1, line2, col2, swap = doc_multiline_selection(true)
-  for line = line1, line2 do
-    local line_text = doc().lines[line]
-    if (not skip_empty or line_text:find("%S")) then
-      doc():insert(line, 1, text)
-    end
-  end
-  doc():set_selection(line1, col1 + #text, line2, col2 + #text, swap)
-end
-
-
-local function remove_from_start_of_selected_lines(text, skip_empty)
-  local line1, col1, line2, col2, swap = doc_multiline_selection(true)
-  for line = line1, line2 do
-    local line_text = doc().lines[line]
-    if  line_text:sub(1, #text) == text
-    and (not skip_empty or line_text:find("%S"))
-    then
-      doc():remove(line, 1, line, #text + 1)
-    end
-  end
-  doc():set_selection(line1, col1 - #text, line2, col2 - #text, swap)
-end
-
-
 local function append_line_if_last_line(line)
   if line >= #doc().lines then
     doc():insert(line, math.huge, "\n")
@@ -107,7 +80,7 @@ end
 --   and remove the appropriate amount of spaces (or a tab).
 local function indent_text(unindent)
   local text = get_indent_string()
-  local line1, col1, line2, col2, swap = doc():get_selection(true)
+  local line1, col1, line2, col2, swap = doc_multiline_selection(true)
   local _, se = doc().lines[line1]:find("^[ \t]+")
   local in_beginning_whitespace = col1 == 1 or (se and col1 <= se + 1)
   if unindent or doc():has_selection() or in_beginning_whitespace then
@@ -286,19 +259,31 @@ local commands = {
   ["doc:toggle-line-comments"] = function()
     local comment = doc().syntax.comment
     if not comment then return end
+    local indentation = get_indent_string()
     local comment_text = comment .. " "
-    local line1, _, line2 = doc():get_selection(true)
+    local line1, _, line2 = doc_multiline_selection(true)
     local uncomment = true
+    local start_offset = math.huge
     for line = line1, line2 do
       local text = doc().lines[line]
-      if text:find("%S") and text:find(comment_text, 1, true) ~= 1 then
+      local s = text:find("%S")
+      local cs, ce = text:find(comment_text, s, true)
+      if s and cs ~= s then
         uncomment = false
+        start_offset = math.min(start_offset, s)
       end
     end
-    if uncomment then
-      remove_from_start_of_selected_lines(comment_text, true)
-    else
-      insert_at_start_of_selected_lines(comment_text, true)
+    for line = line1, line2 do
+      local text = doc().lines[line]
+      local s = text:find("%S")
+      if uncomment then
+        local cs, ce = text:find(comment_text, s, true)
+        if ce then
+          doc():remove(line, cs, line, ce + 1)
+        end
+      elseif s then
+        doc():insert(line, start_offset, comment_text)
+      end
     end
   end,
 
@@ -346,9 +331,10 @@ local commands = {
   end,
 
   ["doc:save-as"] = function()
+    local last_doc = core.last_active_view and core.last_active_view.doc
     if doc().filename then
       core.command_view:set_text(doc().filename)
-    elseif core.last_active_view and core.last_active_view.doc then
+    elseif last_doc and last_doc.filename then
       local dirname, filename = core.last_active_view.doc.abs_filename:match("(.*)[/\\](.+)$")
       core.command_view:set_text(core.normalize_to_project_dir(dirname) .. PATHSEP)
     end
diff --git a/data/core/config.lua b/data/core/config.lua
index 74ca3d2f..36a67add 100644
--- a/data/core/config.lua
+++ b/data/core/config.lua
@@ -3,7 +3,7 @@ local config = {}
 config.project_scan_rate = 5
 config.fps = 60
 config.max_log_items = 80
-config.message_timeout = 3
+config.message_timeout = 5
 config.mouse_wheel_scroll = 50 * SCALE
 config.file_size_limit = 10
 config.ignore_files = "^%."
diff --git a/data/core/init.lua b/data/core/init.lua
index 6d6183c2..6be03800 100644
--- a/data/core/init.lua
+++ b/data/core/init.lua
@@ -68,6 +68,7 @@ function core.set_project_dir(new_dir, change_project_fn)
     core.project_directories = {}
     core.add_project_directory(new_dir)
     core.project_files = {}
+    core.project_files_limit = false
     core.reschedule_project_scan()
     return true
   end
@@ -95,6 +96,57 @@ local function strip_trailing_slash(filename)
   return filename
 end
 
+local function compare_file(a, b)
+  return a.filename < b.filename
+end
+
+-- "root" will by an absolute path without trailing '/'
+-- "path" will be a path starting with '/' and without trailing '/'
+--    or the empty string.
+--    It will identifies a sub-path within "root.
+-- The current path location will therefore always be: root .. path.
+-- When recursing "root" will always be the same, only "path" will change.
+-- Returns a list of file "items". In eash item the "filename" will be the
+-- complete file path relative to "root" *without* the trailing '/'.
+local function get_directory_files(root, path, t, recursive, begin_hook)
+  if begin_hook then begin_hook() end
+  local size_limit = config.file_size_limit * 10e5
+  local all = system.list_dir(root .. path) or {}
+  local dirs, files = {}, {}
+
+  local entries_count = 0
+  local max_entries = config.max_project_files
+  for _, file in ipairs(all) do
+    if not common.match_pattern(file, config.ignore_files) then
+      local file = path .. PATHSEP .. file
+      local info = system.get_file_info(root .. file)
+      if info and info.size < size_limit then
+        info.filename = strip_leading_path(file)
+        table.insert(info.type == "dir" and dirs or files, info)
+        entries_count = entries_count + 1
+        if recursive and entries_count > max_entries then return nil, entries_count end
+      end
+    end
+  end
+
+  table.sort(dirs, compare_file)
+  for _, f in ipairs(dirs) do
+    table.insert(t, f)
+    if recursive and entries_count <= max_entries then
+      local subdir_t, subdir_count = get_directory_files(root, PATHSEP .. f.filename, t, recursive)
+      entries_count = entries_count + subdir_count
+      f.scanned = true
+    end
+  end
+
+  table.sort(files, compare_file)
+  for _, f in ipairs(files) do
+    table.insert(t, f)
+  end
+
+  return t, entries_count
+end
+
 local function project_scan_thread()
   local function diff_files(a, b)
     if #a ~= #b then return true end
@@ -106,71 +158,21 @@ local function project_scan_thread()
     end
   end
 
-  local function compare_file(a, b)
-    return a.filename < b.filename
-  end
-
-  -- "root" will by an absolute path without trailing '/'
-  -- "path" will be a path starting with '/' and without trailing '/'
-  --    or the empty string.
-  --    It will identifies a sub-path within "root.
-  -- The current path location will therefore always be: root .. path.
-  -- When recursing "root" will always be the same, only "path" will change.
-  -- Returns a list of file "items". In eash item the "filename" will be the
-  -- complete file path relative to "root" *without* the trailing '/'.
-  local function get_files(root, path, t)
-    coroutine.yield()
-    t = t or {}
-    local size_limit = config.file_size_limit * 10e5
-    local all = system.list_dir(root .. path) or {}
-    local dirs, files = {}, {}
-
-    local entries_count = 0
-    local max_entries = config.max_project_files
-    for _, file in ipairs(all) do
-      if not common.match_pattern(file, config.ignore_files) then
-        local file = path .. PATHSEP .. file
-        local info = system.get_file_info(root .. file)
-        if info and info.size < size_limit then
-          info.filename = strip_leading_path(file)
-          table.insert(info.type == "dir" and dirs or files, info)
-          entries_count = entries_count + 1
-          if entries_count > max_entries then break end
-        end
-      end
-    end
-
-    table.sort(dirs, compare_file)
-    for _, f in ipairs(dirs) do
-      table.insert(t, f)
-      if entries_count <= max_entries then
-        local subdir_t, subdir_count = get_files(root, PATHSEP .. f.filename, t)
-        entries_count = entries_count + subdir_count
-      end
-    end
-
-    table.sort(files, compare_file)
-    for _, f in ipairs(files) do
-      table.insert(t, f)
-    end
-
-    return t, entries_count
-  end
-
   while true do
     -- get project files and replace previous table if the new table is
     -- different
-    for i = 1, #core.project_directories do
+    local i = 1
+    while not core.project_files_limit and i <= #core.project_directories do
       local dir = core.project_directories[i]
-      local t, entries_count = get_files(dir.name, "")
+      local t, entries_count = get_directory_files(dir.name, "", {}, true)
       if diff_files(dir.files, t) then
         if entries_count > config.max_project_files then
+          core.project_files_limit = true
           core.status_view:show_message("!", style.accent,
-            "Too many files in project directory: stopping reading at "..
-            config.max_project_files.." files according to config.max_project_files. "..
-            "Either tweak this variable, or ignore certain files/directories by "..
-            "using the config.ignore_files variable in your user plugin or "..
-            "project config.")
+            "Too many files in project directory: stopped reading at "..
+            config.max_project_files.." files. For more information see "..
+            "usage.md at github.com/franko/lite-xl."
+            )
         end
         dir.files = t
         core.redraw = true
@@ -178,6 +180,7 @@ local function project_scan_thread()
       if dir.name == core.project_dir then
         core.project_files = dir.files
       end
+      i = i + 1
     end
 
     -- wait for next scan
@@ -186,6 +189,46 @@ local function project_scan_thread()
 end
 
 
+function core.scan_project_folder(dirname, filename)
+  for _, dir in ipairs(core.project_directories) do
+    if dir.name == dirname then
+      for i, file in ipairs(dir.files) do
+        local file = dir.files[i]
+        if file.filename == filename then
+          if file.scanned then return end
+          local new_files = get_directory_files(dirname, PATHSEP .. filename, {})
+          for j, new_file in ipairs(new_files) do
+            table.insert(dir.files, i + j, new_file)
+          end
+          file.scanned = true
+          return
+        end
+      end
+    end
+  end
+end
+
+
+local function find_project_files_co(root, path)
+  local size_limit = config.file_size_limit * 10e5
+  local all = system.list_dir(root .. path) or {}
+  for _, file in ipairs(all) do
+    if not common.match_pattern(file, config.ignore_files) then
+      local file = path .. PATHSEP .. file
+      local info = system.get_file_info(root .. file)
+      if info and info.size < size_limit then
+        info.filename = strip_leading_path(file)
+        if info.type == "file" then
+          coroutine.yield(root, info)
+        else
+          find_project_files_co(root, PATHSEP .. info.filename)
+        end
+      end
+    end
+  end
+end
+
+
 local function project_files_iter(state)
   local dir = core.project_directories[state.dir_index]
   state.file_index = state.file_index + 1
@@ -200,17 +243,27 @@ end
 
 
 function core.get_project_files()
-  local state = { dir_index = 1, file_index = 0 }
-  return project_files_iter, state
+  if core.project_files_limit then
+    return coroutine.wrap(function()
+      for _, dir in ipairs(core.project_directories) do
+        find_project_files_co(dir.name, "")
+      end
+    end)
+  else
+    local state = { dir_index = 1, file_index = 0 }
+    return project_files_iter, state
+  end
 end
 
 
 function core.project_files_number()
-  local n = 0
-  for i = 1, #core.project_directories do
-    n = n + #core.project_directories[i].files
+  if not core.project_files_limit then
+    local n = 0
+    for i = 1, #core.project_directories do
+      n = n + #core.project_directories[i].files
+    end
+    return n
   end
-  return n
 end
 
 
@@ -270,7 +323,7 @@ local style = require "core.style"
 ------------------------------- Fonts ----------------------------------------
 
 -- customize fonts:
--- style.font = renderer.font.load(DATADIR .. "/fonts/FiraSans-Medium.ttf", 13 * SCALE)
+-- style.font = renderer.font.load(DATADIR .. "/fonts/FiraSans-Regular.ttf", 13 * SCALE)
 -- style.code_font = renderer.font.load(DATADIR .. "/fonts/JetBrainsMono-Regular.ttf", 13 * SCALE)
 --
 -- font names used by lite:
@@ -353,6 +406,20 @@ local function whitespace_replacements()
 end
 
 
+local function reload_on_user_module_save()
+  -- auto-realod style when user's module is saved by overriding Doc:Save()
+  local doc_save = Doc.save
+  local user_filename = system.absolute_path(USERDIR .. PATHSEP .. "init.lua")
+  function Doc:save(filename)
+    doc_save(self)
+    if self.abs_filename == user_filename then
+      core.reload_module("core.style")
+      core.load_user_directory()
+    end
+  end
+end
+
+
 function core.init()
   command = require "core.command"
   keymap = require "core.keymap"
@@ -374,7 +441,7 @@ function core.init()
     local recent_projects, window_position, window_mode = load_session()
     if window_mode == "normal" then
       system.set_window_size(table.unpack(window_position))
-    else
+    elseif window_mode == "maximized" then
       system.set_window_mode("maximized")
     end
     core.recent_projects = recent_projects
@@ -495,6 +562,8 @@ function core.init()
         if item.text == "Exit" then os.exit(1) end
       end)
   end
+
+  reload_on_user_module_save()
 end
 
 
@@ -554,13 +623,19 @@ do
 end
 
 
+-- DEPRECATED function
 core.doc_save_hooks = {}
 function core.add_save_hook(fn)
+  core.error("The function core.add_save_hook is deprecated." ..
+    " Modules should now directly override the Doc:save function.")
   core.doc_save_hooks[#core.doc_save_hooks + 1] = fn
 end
 
 
+-- DEPRECATED function
 function core.on_doc_save(filename)
+  -- for backward compatibility in modules. Hooks are deprecated, the function Doc:save
+  -- should be directly overidded.
   for _, hook in ipairs(core.doc_save_hooks) do
     hook(filename)
   end
@@ -1042,15 +1117,4 @@ function core.on_error(err)
 end
 
 
-core.add_save_hook(function(filename)
-  local doc = core.active_view.doc
-  local user_filename = system.absolute_path(USERDIR .. PATHSEP .. "init.lua")
-  if doc and doc:is(Doc) and doc.abs_filename == user_filename then
-    core.reload_module("core.style")
-    core.load_user_directory()
-  end
-end)
-
-
-
 return core
diff --git a/data/core/rootview.lua b/data/core/rootview.lua
index 7cdc78cb..8b3a91ae 100644
--- a/data/core/rootview.lua
+++ b/data/core/rootview.lua
@@ -272,6 +272,7 @@ end
 
 
 function Node:get_scroll_button_index(px, py)
+  if #self.views == 1 then return end
   for i = 1, 2 do
     local x, y, w, h = self:get_scroll_button_rect(i)
     if px >= x and px < x + w and py >= y and py < y + h then
diff --git a/data/core/start.lua b/data/core/start.lua
index 17e12bde..513fda22 100644
--- a/data/core/start.lua
+++ b/data/core/start.lua
@@ -1,6 +1,5 @@
--- this file is used by lite-xl to setup the Lua environment
--- when starting
-VERSION = "1.16.10"
+-- this file is used by lite-xl to setup the Lua environment when starting
+VERSION = "1.16.11"
 MOD_VERSION = "1"
 
 SCALE = tonumber(os.getenv("LITE_SCALE")) or SCALE
diff --git a/data/core/style.lua b/data/core/style.lua
index 7001cdc1..60df7c73 100644
--- a/data/core/style.lua
+++ b/data/core/style.lua
@@ -21,8 +21,8 @@ style.tab_width = common.round(170 * SCALE)
 --
 -- On High DPI monitor or non RGB monitor you may consider using antialiasing grayscale instead.
 -- The antialiasing grayscale with full hinting is interesting for crisp font rendering.
-style.font = renderer.font.load(DATADIR .. "/fonts/FiraSans-Medium.ttf", 13 * SCALE)
-style.big_font = renderer.font.load(DATADIR .. "/fonts/FiraSans-Medium.ttf", 40 * SCALE)
+style.font = renderer.font.load(DATADIR .. "/fonts/FiraSans-Regular.ttf", 13 * SCALE)
+style.big_font = renderer.font.load(DATADIR .. "/fonts/FiraSans-Regular.ttf", 40 * SCALE)
 style.icon_font = renderer.font.load(DATADIR .. "/fonts/icons.ttf", 14 * SCALE, {antialiasing="grayscale", hinting="full"})
 style.icon_big_font = renderer.font.load(DATADIR .. "/fonts/icons.ttf", 20 * SCALE, {antialiasing="grayscale", hinting="full"})
 style.code_font = renderer.font.load(DATADIR .. "/fonts/JetBrainsMono-Regular.ttf", 13 * SCALE)
diff --git a/data/fonts/FiraSans-Medium.ttf b/data/fonts/FiraSans-Medium.ttf
deleted file mode 100644
index fb9c257c..00000000
Binary files a/data/fonts/FiraSans-Medium.ttf and /dev/null differ
diff --git a/data/plugins/detectindent.lua b/data/plugins/detectindent.lua
index 63fe8a52..9e7ed93c 100644
--- a/data/plugins/detectindent.lua
+++ b/data/plugins/detectindent.lua
@@ -76,7 +76,7 @@ local function get_non_empty_lines(syntax, lines)
 end
 
 
-local auto_detect_max_lines = 200
+local auto_detect_max_lines = 100
 
 local function detect_indent_stat(doc)
   local stat = {}
@@ -99,29 +99,11 @@ local function detect_indent_stat(doc)
 end
 
 
-local doc_on_text_change = Doc.on_text_change
-local adjust_threshold = 4
-
-local current_on_text_change = nil
-
 local function update_cache(doc)
   local type, size, score = detect_indent_stat(doc)
-  cache[doc] = { type = type, size = size, confirmed = (score >= adjust_threshold) }
+  local score_threshold = 4
+  cache[doc] = { type = type, size = size, confirmed = (score >= score_threshold) }
   doc.indent_info = cache[doc]
-  if score < adjust_threshold and doc_on_text_change then
-    current_on_text_change = function(self, ...)
-      update_cache(self)
-    end
-  elseif score >= adjust_threshold and doc_on_text_change then
-    current_on_text_change = nil
-  end
-end
-
-function Doc.on_text_change(...)
-  if current_on_text_change then
-    current_on_text_change(...)
-  end
-  doc_on_text_change(...)
 end
 
 
@@ -129,6 +111,14 @@ local new = Doc.new
 function Doc:new(...)
   new(self, ...)
   update_cache(self)
+  if not cache[self].confirmed then
+    core.add_thread(function ()
+      while not cache[self].confirmed do
+        update_cache(self)
+        coroutine.yield(1)
+      end
+    end, self)
+  end
 end
 
 local clean = Doc.clean
diff --git a/data/plugins/projectsearch.lua b/data/plugins/projectsearch.lua
index 9b9c34b3..45399ed0 100644
--- a/data/plugins/projectsearch.lua
+++ b/data/plugins/projectsearch.lua
@@ -170,12 +170,17 @@ function ResultsView:draw()
   local ox, oy = self:get_content_offset()
   local x, y = ox + style.padding.x, oy + style.padding.y
   local files_number = core.project_files_number()
-  local per = self.last_file_idx / files_number
+  local per = files_number and self.last_file_idx / files_number or 1
   local text
   if self.searching then
-    text = string.format("Searching %d%% (%d of %d files, %d matches) for %q...",
-      per * 100, self.last_file_idx, files_number,
-      #self.results, self.query)
+    if files_number then
+      text = string.format("Searching %d%% (%d of %d files, %d matches) for %q...",
+        per * 100, self.last_file_idx, files_number,
+        #self.results, self.query)
+    else
+      text = string.format("Searching (%d files, %d matches) for %q...",
+        self.last_file_idx, #self.results, self.query)
+    end
   else
     text = string.format("Found %d matches for %q",
       #self.results, self.query)
diff --git a/data/plugins/treeview.lua b/data/plugins/treeview.lua
index 73f4708c..8615343a 100644
--- a/data/plugins/treeview.lua
+++ b/data/plugins/treeview.lua
@@ -93,6 +93,13 @@ function TreeView:get_item_height()
 end
 
 
+function TreeView:invalidate_cache(dirname)
+  for _, v in pairs(self.cache[dirname]) do
+    v.skip = nil
+  end
+end
+
+
 function TreeView:check_cache()
   -- invalidate cache's skip values if project_files has changed
   for i = 1, #core.project_directories do
@@ -102,9 +109,7 @@ function TreeView:check_cache()
       self.last[dir.name] = dir.files
     else
       if dir.files ~= last_files then
-        for _, v in pairs(self.cache[dir.name]) do
-          v.skip = nil
-        end
+        self:invalidate_cache(dir.name)
         self.last[dir.name] = dir.files
       end
     end
@@ -208,17 +213,25 @@ function TreeView:on_mouse_pressed(button, x, y, clicks)
   if caught then
     return
   end
-  if not self.hovered_item then
+  local hovered_item = self.hovered_item
+  if not hovered_item then
     return
-  elseif self.hovered_item.type == "dir" then
+  elseif hovered_item.type == "dir" then
     if keymap.modkeys["ctrl"] and button == "left" then
-      create_directory_in(self.hovered_item)
+      create_directory_in(hovered_item)
     else
-      self.hovered_item.expanded = not self.hovered_item.expanded
+      if core.project_files_limit and not hovered_item.expanded then
+        local filename, abs_filename = hovered_item.filename, hovered_item.abs_filename
+        local index = string.find(abs_filename, filename, 1, true)
+        local dirname = string.sub(abs_filename, 1, index - 2)
+        core.scan_project_folder(dirname, filename)
+        self:invalidate_cache(dirname)
+      end
+      hovered_item.expanded = not hovered_item.expanded
     end
   else
     core.try(function()
-      local doc_filename = common.relative_path(core.project_dir, self.hovered_item.abs_filename)
+      local doc_filename = common.relative_path(core.project_dir, hovered_item.abs_filename)
       core.root_view:open_doc(core.open_doc(doc_filename))
     end)
   end
diff --git a/doc/usage.md b/doc/usage.md
index d92ea707..90f6dc8d 100644
--- a/doc/usage.md
+++ b/doc/usage.md
@@ -71,6 +71,13 @@ The project module can be edited by running the `core:open-project-module`
 command — if the module does not exist for the current project when the
 command is run it will be created.
 
+## Big directories
+Often projects contain compiled, bundled or downloaded files which you don't want to edit. These files can be excluded from projects by configuring `config.ignore_files`. Such a configuration might look like `config.ignore_files = { "^%.", "node_modules" }`. This will exclude the `node_modules` folder and any file starting with `.`. You can add this to a user or project module.
+
+If a project has more files than the maximum (configured with `config.max_project_files`) lite-xl will switch to a different mode where files are lazily loaded.
+
+_Note: Because of lazy loading `core:find-file` will open `core:open-file` instead._
+
 ## Add directories to a project
 
 In addition to the project directories it is possible to add other directories