diff --git a/startup b/startup
index abc153a..0c29997 100644
--- a/startup
+++ b/startup
@@ -1,9 +1,18 @@
+local colors   = _G.colors
+local os       = _G.os
+local settings = _G.settings
+local term     = _G.term
+
 local bootOptions = {
-  { prompt = 'Default Shell', file = '/sys/boot/default.boot' },
-  { prompt = 'Opus'         , file = '/sys/boot/opus.boot' },
---  { prompt = 'TLCO'         , file = '/sys/boot/tlco.boot' },
+  { prompt = os.version() },
+  { prompt = 'Opus'         , args = { '/sys/boot/opus.boot' } },
+  { prompt = 'Opus Shell'   , args = { '/sys/boot/opus.boot', 'sys/apps/shell' } },
 }
 local bootOption = 2
+if settings then
+  settings.load('.settings')
+  bootOption = tonumber(settings.get('opus.boot_option') or 2) or 2
+end
 
 local function startupMenu()
   while true do
@@ -16,20 +25,51 @@ local function startupMenu()
     end
     print('')
     term.write('> ')
-    local ch = tonumber(read())
+    local ch = tonumber(_G.read())
     if ch and bootOptions[ch] then
       return ch
     end
   end
-  term.clear()
-  term.setCursorPos(1, 1)
+end
+
+local function splash()
+  local w, h = term.current().getSize()
+
+  term.setTextColor(colors.white)
+  if not term.isColor() then
+    local str = 'Opus OS'
+    term.setCursorPos((w - #str) / 2, h / 2)
+    term.write(str)
+  else
+    term.setBackgroundColor(colors.black)
+    term.clear()
+    local opus = {
+      'fffff00',
+      'ffff07000',
+      'ff00770b00 4444',
+      'ff077777444444444',
+      'f07777744444444444',
+      'f0000777444444444',
+      '070000111744444',
+      '777770000',
+      '7777000000',
+      '70700000000',
+      '077000000000',
+    }
+    for k,line in ipairs(opus) do
+      term.setCursorPos((w - 18) / 2, k + (h - #opus) / 2)
+      term.blit(string.rep(' ', #line), string.rep('a', #line), line)
+    end
+  end
+
+  local str = 'Press any key for menu'
+  term.setCursorPos((w - #str) / 2, h)
+  term.write(str)
 end
 
 term.clear()
-term.setCursorPos(1, 1)
-print('Starting OS')
-print()
-print('Press any key for menu')
+splash()
+
 local timerId = os.startTimer(1.5)
 while true do
   local e, id = os.pullEvent()
@@ -38,8 +78,18 @@ while true do
   end
   if e == 'char' then
     bootOption = startupMenu()
+    if settings then
+      settings.set('opus.boot_option', bootOption)
+      settings.save('.settings')
+    end
     break
   end
 end
 
-os.run(getfenv(1), bootOptions[bootOption].file)
\ No newline at end of file
+term.clear()
+term.setCursorPos(1, 1)
+if bootOptions[bootOption].args then
+  os.run(_G.getfenv(1), table.unpack(bootOptions[bootOption].args))
+else
+  print(bootOptions[bootOption].prompt)
+end
diff --git a/sys/apis/event.lua b/sys/apis/event.lua
index d177bae..2bfac8e 100644
--- a/sys/apis/event.lua
+++ b/sys/apis/event.lua
@@ -154,8 +154,10 @@ function Event.pullEvents(...)
   end
 
   repeat
-    local e = Event.pullEvent()
-  until e[1] == 'terminate'
+    Event.pullEvent()
+  until Event.terminate
+
+  Event.terminate = false
 end
 
 function Event.exitPullEvents()
@@ -203,11 +205,12 @@ function Event.pullEvent(eventType)
   while true do
     local e = { os.pullEventRaw() }
 
+    Event.terminate = Event.terminate or e[1] == 'terminate'
+
     processHandlers(e[1])
     processRoutines(table.unpack(e))
 
-    if Event.terminate or e[1] == 'terminate' then
-      Event.terminate = false
+    if Event.terminate then
       return { 'terminate' }
     end
 
diff --git a/sys/apis/injector.lua b/sys/apis/injector.lua
index 95df150..e944775 100644
--- a/sys/apis/injector.lua
+++ b/sys/apis/injector.lua
@@ -55,12 +55,13 @@ local function loadUrl(url)
   end
 end
 
+-- Add require and package to the environment
 local function requireWrapper(env)
 
   local function standardSearcher(modname)
-    if package.loaded[modname] then
+    if env.package.loaded[modname] then
       return function()
-        return package.loaded[modname]
+        return env.package.loaded[modname]
       end
     end
   end
@@ -79,7 +80,7 @@ local function requireWrapper(env)
   local function pathSearcher(modname)
     local fname = modname:gsub('%.', '/') .. '.lua'
 
-    for dir in string.gmatch(package.path, "[^:]+") do
+    for dir in string.gmatch(env.package.path, "[^:]+") do
       local path = fs.combine(dir, fname)
       if fs.exists(path) and not fs.isDir(path) then
         return loadfile(path, env)
@@ -115,7 +116,7 @@ local function requireWrapper(env)
     local fname = modname:gsub('%.', '/') .. '.lua'
 
     if fname:sub(1, 1) ~= '/' then
-      for entry in string.gmatch(package.upath, "[^;]+") do
+      for entry in string.gmatch(env.package.upath, "[^;]+") do
         local url = entry .. '/' .. fname
         local c = loadUrl(url)
         if c then
@@ -127,8 +128,8 @@ local function requireWrapper(env)
 
   -- place package and require function into env
   env.package = {
-    path = LUA_PATH or 'sys/apis',
-    upath = LUA_UPATH or DEFAULT_UPATH,
+    path = env.LUA_PATH or 'sys/apis',
+    upath = env.LUA_UPATH or DEFAULT_UPATH,
     config = '/\n:\n?\n!\n-',
     loaded = {
       math   = math,
@@ -148,15 +149,14 @@ local function requireWrapper(env)
   }
 
   function env.require(modname)
-
-    for _,searcher in ipairs(package.loaders) do
+    for _,searcher in ipairs(env.package.loaders) do
       local fn, msg = searcher(modname)
       if fn then
         local module, msg2 = fn(modname, env)
         if not module then
           error(msg2 or (modname .. ' module returned nil'), 2)
         end
-        package.loaded[modname] = module
+        env.package.loaded[modname] = module
         return module
       end
       if msg then
@@ -171,6 +171,6 @@ end
 
 return function(env)
   env = env or getfenv(2)
-  setfenv(requireWrapper, env)
+  --setfenv(requireWrapper, env)
   return requireWrapper(env)
 end
diff --git a/sys/apis/peripheral.lua b/sys/apis/peripheral.lua
index 022d2bf..0f7e2da 100644
--- a/sys/apis/peripheral.lua
+++ b/sys/apis/peripheral.lua
@@ -121,10 +121,10 @@ function Peripheral.get(args)
 end
 
 local function getProxy(pi)
-  local socket = Socket.connect(pi.host, 189)
+  local socket, msg = Socket.connect(pi.host, 189)
 
   if not socket then
-    error("Timed out attaching peripheral: " .. pi.uri)
+    error("Timed out attaching peripheral: " .. pi.uri .. '\n' .. msg)
   end
 
   -- write the uri of the periperal we are requesting...
diff --git a/sys/apis/socket.lua b/sys/apis/socket.lua
index a3f3e95..9c0c0d1 100644
--- a/sys/apis/socket.lua
+++ b/sys/apis/socket.lua
@@ -24,7 +24,7 @@ function socketClass:read(timeout)
   while true do
     local e, id = os.pullEvent()
 
-    if e == 'transport_' .. self.sport then
+    if e == 'transport_' .. self.uid then
       data, distance = _G.transport.read(self)
       if data then
         os.cancelTimer(timerId)
diff --git a/sys/apis/terminal.lua b/sys/apis/terminal.lua
index 9e5db8b..507eda3 100644
--- a/sys/apis/terminal.lua
+++ b/sys/apis/terminal.lua
@@ -1,38 +1,227 @@
 local colors = _G.colors
 local term   = _G.term
 local _gsub  = string.gsub
+local _rep = string.rep
+local _sub = string.sub
 
 local Terminal = { }
 
-function Terminal.scrollable(win, parent)
-  local w, h = win.getSize()
-  local _, ph = parent.getSize()
+-- add scrolling functions to a window
+function Terminal.scrollable(win, maxScroll)
+  local lines = { }
   local scrollPos = 0
-  local scp = win.setCursorPos
+  local oblit, oreposition = win.blit, win.reposition
 
-  win.setCursorPos = function(x, y)
-  _G._p = y
-    if y > scrollPos + ph then
-      win.scrollTo(y - ph)
+  local palette = { }
+  for n = 1, 16 do
+    palette[2 ^ (n - 1)] = _sub("0123456789abcdef", n, n)
+  end
+
+  maxScroll = maxScroll or 100
+
+  -- should only do if window is visible...
+  local function redraw()
+    local _, h = win.getSize()
+    local x, y = win.getCursorPos()
+    for i = 1, h do
+      local line = lines[i + scrollPos]
+      if line and line.dirty then
+        win.setCursorPos(1, i)
+        oblit(line.text, line.fg, line.bg)
+        line.dirty = false
+      end
     end
-    scp(x, y)
+    win.setCursorPos(x, y)
   end
 
-  win.scrollUp = function()
-    win.scrollTo(scrollPos - 1)
-  end
+  local function scrollTo(p, forceRedraw)
+    local _, h = win.getSize()
+    local ms = #lines - h            -- max scroll
+    p = math.min(math.max(p, 0), ms) -- normalize
 
-  win.scrollDown = function()
-    win.scrollTo(scrollPos + 1)
-  end
-
-  win.scrollTo = function(p)
-    p = math.min(math.max(p, 0), h - ph)
-    if p ~= scrollPos then
+    if p ~= scrollPos or forceRedraw then
       scrollPos = p
-      win.reposition(1, -scrollPos + 1, w, h)
+      for _, line in pairs(lines) do
+        line.dirty = true
+      end
     end
   end
+
+  function win.write(text)
+    local _, h = win.getSize()
+
+    scrollTo(#lines - h)
+    win.blit(tostring(text),
+      _rep(palette[win.getTextColor()], #text),
+      _rep(palette[win.getBackgroundColor()], #text))
+    local x, y = win.getCursorPos()
+    win.setCursorPos(x + #text, y)
+  end
+
+  function win.clearLine()
+    local w, h = win.getSize()
+    local _, y = win.getCursorPos()
+
+    scrollTo(#lines - h)
+    lines[y + scrollPos] = {
+      text = _rep(' ', w),
+      fg = _rep(palette[win.getTextColor()], w),
+      bg = _rep(palette[win.getBackgroundColor()], w),
+      dirty = true,
+    }
+    redraw()
+  end
+
+  function win.blit(text, fg, bg)
+    local x, y = win.getCursorPos()
+    local w, h = win.getSize()
+
+    if y > 0 and y <= h and x <= w then
+      local width = #text
+
+      -- fix ffs
+      if x < 1 then
+        text = _sub(text, 2 - x)
+        if bg then
+          bg = _sub(bg, 2 - x)
+        end
+        if bg then
+          fg = _sub(fg, 2 - x)
+        end
+        width = width + x - 1
+        x = 1
+      end
+
+      if x + width - 1 > w then
+        text = _sub(text, 1, w - x + 1)
+        if bg then
+          bg = _sub(bg, 1, w - x + 1)
+        end
+        if bg then
+          fg = _sub(fg, 1, w - x + 1)
+        end
+        width = #text
+      end
+
+      if width > 0 then
+        local function replace(sstr, pos, rstr)
+          if pos == 1 and width == w then
+            return rstr
+          elseif pos == 1 then
+            return rstr .. _sub(sstr, pos+width)
+          elseif pos + width > w then
+            return _sub(sstr, 1, pos-1) .. rstr
+          end
+          return _sub(sstr, 1, pos-1) .. rstr .. _sub(sstr, pos+width)
+        end
+
+        local line = lines[y + scrollPos]
+        line.dirty = true
+        line.text = replace(line.text, x, text, width)
+        if fg then
+          line.fg = replace(line.fg, x, fg, width)
+        end
+        if bg then
+          line.bg = replace(line.bg, x, bg, width)
+        end
+      end
+    end
+    redraw()
+  end
+
+  function win.clear()
+    local w, h = win.getSize()
+
+    local text = _rep(' ', w)
+    local fg = _rep(palette[win.getTextColor()], w)
+    local bg = _rep(palette[win.getBackgroundColor()], w)
+    lines = { }
+    for y = 1, h do
+      lines[y] = {
+        dirty = true,
+        text = text,
+        fg = fg,
+        bg = bg,
+      }
+    end
+    scrollPos = 0
+    redraw()
+  end
+
+  -- doesn't support negative scrolling...
+  function win.scroll(n)
+    local w = win.getSize()
+
+    for _ = 1, n do
+      lines[#lines + 1] = {
+        text = _rep(' ', w),
+        fg = _rep(palette[win.getTextColor()], w),
+        bg = _rep(palette[win.getBackgroundColor()], w),
+      }
+    end
+
+    while #lines > maxScroll do
+      table.remove(lines, 1)
+    end
+
+    scrollTo(maxScroll, true)
+    redraw()
+  end
+
+  function win.scrollUp()
+    scrollTo(scrollPos - 1)
+    redraw()
+  end
+
+  function win.scrollDown()
+    scrollTo(scrollPos + 1)
+    redraw()
+  end
+
+  function win.reposition(x, y, nw, nh)
+    local w, h = win.getSize()
+    local D = (nh or h) - h
+
+    if D > 0 then
+      for _ = 1, D do
+        lines[#lines + 1] = {
+          text = _rep(' ', w),
+          fg = _rep(palette[win.getTextColor()], w),
+          bg = _rep(palette[win.getBackgroundColor()], w),
+        }
+      end
+    elseif D < 0 then
+      for _ = D, -1 do
+        lines[#lines] = nil
+      end
+    end
+    return oreposition(x, y, nw, nh)
+  end
+
+  win.clear()
+end
+
+-- get windows contents
+function Terminal.getContents(win, parent)
+  local oblit, oscp = parent.blit, parent.setCursorPos
+  local lines = { }
+
+  parent.blit = function(text, fg, bg)
+    lines[#lines + 1] = {
+      text = text,
+      fg = fg,
+      bg = bg,
+    }
+  end
+  parent.setCursorPos = function() end
+
+  win.setVisible(true)
+  win.redraw()
+
+  parent.blit = oblit
+  parent.setCursorPos = oscp
+
+  return lines
 end
 
 function Terminal.toGrayscale(ct)
diff --git a/sys/apis/util.lua b/sys/apis/util.lua
index 76ded6e..6dc6bce 100644
--- a/sys/apis/util.lua
+++ b/sys/apis/util.lua
@@ -154,6 +154,7 @@ function Util.merge(obj, args)
       obj[k] = v
     end
   end
+  return obj
 end
 
 function Util.deepMerge(obj, args)
diff --git a/sys/apps/Files.lua b/sys/apps/Files.lua
index 114f441..53045b6 100644
--- a/sys/apps/Files.lua
+++ b/sys/apps/Files.lua
@@ -11,7 +11,6 @@ local multishell = _ENV.multishell
 local os         = _G.os
 local shell      = _ENV.shell
 
-multishell.setTitle(multishell.getCurrent(), 'Files')
 UI:configure('Files', ...)
 
 local config = {
@@ -255,9 +254,15 @@ function Browser:setDir(dirName, noStatus)
   self.grid:setIndex(self.dir.index)
 end
 
-function Browser:run(path, ...)
-  local tabId = shell.openTab(path, ...)
-  multishell.setFocus(tabId)
+function Browser:run(...)
+  if multishell then
+    local tabId = shell.openTab(...)
+    multishell.setFocus(tabId)
+  else
+    shell.run(...)
+    Event.terminate = false
+    self:draw()
+  end
 end
 
 function Browser:hasMarked()
diff --git a/sys/apps/Help.lua b/sys/apps/Help.lua
index abec1a8..bb2a913 100644
--- a/sys/apps/Help.lua
+++ b/sys/apps/Help.lua
@@ -5,9 +5,7 @@ local Util  = require('util')
 
 local colors     = _G.colors
 local help       = _G.help
-local multishell = _ENV.multishell
 
-multishell.setTitle(multishell.getCurrent(), 'Help')
 UI:configure('Help', ...)
 
 local topics = { }
diff --git a/sys/apps/Lua.lua b/sys/apps/Lua.lua
index a840897..983bd16 100644
--- a/sys/apps/Lua.lua
+++ b/sys/apps/Lua.lua
@@ -7,7 +7,6 @@ local UI         = require('ui')
 local Util       = require('util')
 
 local colors     = _G.colors
-local multishell = _ENV.multishell
 local os         = _G.os
 local textutils  = _G.textutils
 
@@ -16,9 +15,6 @@ sandboxEnv.exit = function() Event.exitPullEvents() end
 sandboxEnv._echo = function( ... ) return { ... } end
 injector(sandboxEnv)
 
-if multishell and multishell.setTitle then
-  multishell.setTitle(multishell.getCurrent(), 'Lua')
-end
 UI:configure('Lua', ...)
 
 local command = ''
diff --git a/sys/apps/Network.lua b/sys/apps/Network.lua
index c2b10b6..d8831ab 100644
--- a/sys/apps/Network.lua
+++ b/sys/apps/Network.lua
@@ -12,7 +12,6 @@ local network    = _G.network
 local os         = _G.os
 local shell      = _ENV.shell
 
-multishell.setTitle(multishell.getCurrent(), 'Network')
 UI:configure('Network', ...)
 
 local gridColumns = {
diff --git a/sys/apps/Overview.lua b/sys/apps/Overview.lua
index b38b273..ec22405 100644
--- a/sys/apps/Overview.lua
+++ b/sys/apps/Overview.lua
@@ -11,14 +11,13 @@ local UI     = require('ui')
 local Util   = require('util')
 
 local fs         = _G.fs
-local multishell = _ENV.multishell
+local multishell = _ENV.multishell or error('This program requires multishell')
 local pocket     = _G.pocket
 local term       = _G.term
 local turtle     = _G.turtle
 
 local REGISTRY_DIR = 'usr/.registry'
 
-multishell.setTitle(multishell.getCurrent(), 'Overview')
 UI:configure('Overview', ...)
 
 local config = {
diff --git a/sys/apps/System.lua b/sys/apps/System.lua
index ec25b6e..078fffb 100644
--- a/sys/apps/System.lua
+++ b/sys/apps/System.lua
@@ -7,13 +7,11 @@ local UI       = require('ui')
 local Util     = require('util')
 
 local fs         = _G.fs
-local multishell = _ENV.multishell
 local os         = _G.os
 local settings   = _G.settings
 local shell      = _ENV.shell
 local turtle     = _G.turtle
 
-multishell.setTitle(multishell.getCurrent(), 'System')
 UI:configure('System', ...)
 
 local env = {
diff --git a/sys/apps/Tabs.lua b/sys/apps/Tasks.lua
similarity index 94%
rename from sys/apps/Tabs.lua
rename to sys/apps/Tasks.lua
index 3c6a6e4..b77b836 100644
--- a/sys/apps/Tabs.lua
+++ b/sys/apps/Tasks.lua
@@ -4,9 +4,9 @@ local Event = require('event')
 local UI    = require('ui')
 local Util  = require('util')
 
+local kernel     = _G.kernel
 local multishell = _ENV.multishell
 
-multishell.setTitle(multishell.getCurrent(), 'Tasks')
 UI:configure('Tasks', ...)
 
 local page = UI.Page {
@@ -24,7 +24,7 @@ local page = UI.Page {
       { heading = 'Status', key = 'status'    },
       { heading = 'Time',   key = 'timestamp' },
     },
-    values = multishell.getTabs(),
+    values = kernel.routines,
     sortColumn = 'uid',
     autospace = true,
   },
diff --git a/sys/apps/shell b/sys/apps/shell
index 2461f0b..41b95f1 100644
--- a/sys/apps/shell
+++ b/sys/apps/shell
@@ -1,18 +1,15 @@
 local parentShell = _ENV.shell
 
 _ENV.shell = { }
---_ENV.multishell = _ENV.multishell or { }
 
 local fs         = _G.fs
 local shell      = _ENV.shell
---local multishell = _ENV.multishell
 
 local sandboxEnv = setmetatable({ }, { __index = _G })
 for k,v in pairs(_ENV) do
   sandboxEnv[k] = v
 end
 sandboxEnv.shell = shell
---sandboxEnv.multishell = multishell
 
 _G.requireInjector()
 
@@ -64,7 +61,7 @@ local function run(env, ...)
   end
 
   if _ENV.multishell then
-    _ENV.multishell.setTitle(_ENV.multishell.getCurrent(), fs.getName(path))
+    _ENV.multishell.setTitle(_ENV.multishell.getCurrent(), fs.getName(path):match('([^%.]+)'))
   end
 
   if isUrl then
@@ -309,7 +306,7 @@ function shell.newTab(tabInfo, ...)
     tabInfo.path = path
     tabInfo.env = sandboxEnv
     tabInfo.args = args
-    tabInfo.title = fs.getName(path)
+    tabInfo.title = fs.getName(path):match('([^%.]+)')
 
     if path ~= 'sys/apps/shell' then
       table.insert(tabInfo.args, 1, tabInfo.path)
@@ -345,6 +342,7 @@ end
 
 local Config  = require('config')
 local History = require('history')
+local Terminal = require('terminal')
 
 local colors    = _G.colors
 local keys      = _G.keys
@@ -352,6 +350,10 @@ local os        = _G.os
 local term      = _G.term
 local textutils = _G.textutils
 
+local terminal = term.current()
+Terminal.scrollable(terminal, 100)
+terminal.noAutoScroll = true
+
 local config = {
   standard = {
     textColor  = colors.white,
@@ -567,6 +569,12 @@ local function shellRead(history)
       sLine = ''
       nPos = 0
       redraw()
+    elseif sEvent == 'mouse_scroll' then
+      if param == -1 then
+        terminal.scrollUp()
+      else
+        terminal.scrollDown()
+      end
     elseif sEvent == 'terminate' then
       bExit = true
       break
diff --git a/sys/apps/telnet.lua b/sys/apps/telnet.lua
index a1df07d..e77bc83 100644
--- a/sys/apps/telnet.lua
+++ b/sys/apps/telnet.lua
@@ -22,7 +22,7 @@ if not remoteId then
   error('Syntax: telnet [-title TITLE] ID [PROGRAM]')
 end
 
-if options.title then
+if options.title and multishell then
   multishell.setTitle(multishell.getCurrent(), options.title)
 end
 
diff --git a/sys/apps/vnc.lua b/sys/apps/vnc.lua
index df5acae..748f8f0 100644
--- a/sys/apps/vnc.lua
+++ b/sys/apps/vnc.lua
@@ -22,7 +22,9 @@ if not remoteId then
   error('Syntax: vnc <host ID>')
 end
 
-multishell.setTitle(multishell.getCurrent(), 'VNC-' .. remoteId)
+if multishell then
+  multishell.setTitle(multishell.getCurrent(), 'VNC-' .. remoteId)
+end
 
 print('connecting...')
 local socket, msg = Socket.connect(remoteId, 5900)
diff --git a/sys/boot/opus.boot b/sys/boot/opus.boot
index 0df7dc5..6250651 100644
--- a/sys/boot/opus.boot
+++ b/sys/boot/opus.boot
@@ -25,10 +25,7 @@ end
 local function run(file, ...)
   local s, m = loadfile(file, makeEnv())
   if s then
-    s, m = pcall(s, ...)
-    if s then
-      return m
-    end
+    return s(...)
   end
   error('Error loading ' .. file .. '\n' .. m)
 end
@@ -47,23 +44,19 @@ local function runUrl(file, ...)
   error('Failed to download ' .. url)
 end
 
-local args = { ... }
+-- Install require shim
+if fs.exists('sys/apis/injector.lua') then
+  _G.requireInjector = run('sys/apis/injector.lua')
+else
+  -- not local, run the file system directly from git
+  _G.requireInjector = runUrl('sys/apis/injector.lua')
+  runUrl('sys/extensions/2.vfs.lua')
 
-local s, m = pcall(function()
-  -- Install require shim
-  if fs.exists('sys/apis/injector.lua') then
-    _G.requireInjector = run('sys/apis/injector.lua')
-  else
-    -- not local, run the file system directly from git
-    _G.requireInjector = runUrl('sys/apis/injector.lua')
-    runUrl('sys/extensions/2.vfs.lua')
+  -- install file system
+  fs.mount('', 'gitfs', GIT_REPO)
+end
 
-    -- install file system
-    fs.mount('', 'gitfs', GIT_REPO)
-  end
-
-  run('sys/apps/shell', 'sys/kernel.lua', table.unpack(args))
-end)
+local s, m = pcall(run, 'sys/apps/shell', 'sys/kernel.lua', ...)
 
 if not s then
   print('\nError loading Opus OS\n')
diff --git a/sys/boot/tlco.boot b/sys/boot/tlco.boot
index 9e35802..cd6d1bb 100644
--- a/sys/boot/tlco.boot
+++ b/sys/boot/tlco.boot
@@ -2,14 +2,14 @@ local pullEvent = os.pullEventRaw
 local shutdown = os.shutdown
 
 os.pullEventRaw = function()
-  error('die')
+  error('')
 end
 
 os.shutdown = function()
   os.pullEventRaw = pullEvent
   os.shutdown = shutdown
 
-  os.run(getfenv(1), 'sys/boot/multishell.boot')
+  os.run(getfenv(1), 'sys/boot/opus.boot')
 end
 
 os.queueEvent('modem_message')
diff --git a/sys/etc/app.db b/sys/etc/app.db
index 81e2a41..c1b86b2 100644
--- a/sys/etc/app.db
+++ b/sys/etc/app.db
@@ -95,7 +95,7 @@
 \030 \031f |  |\
 \030 \031fo| o|\
 ",
-    run = "usr/apps/music.lua",
+    run = "usr/apps/Music.lua",
     requires = 'turtle',
   },
   c47ae15370cfe1ed2781eedc1dc2547d12d9e972 = {
@@ -128,7 +128,7 @@
     icon = "\0304  \030   \
 \030f \0304 \0307 \030 \031  \031f_\
 \030f \0304 \0307 \030 \031f/",
-    run = "Peripherals.lua",
+    run = "Devices.lua",
   },
   f39d173d91c22348565c20283b89d4d1cabd3b7e = {
     title = "Falling",
@@ -170,7 +170,7 @@
     icon = "\030f\031f    \0315/\
 \030f\031f \0315/\\/ \
 \030f\0315/\031f    ",
-    run = "Tabs.lua",
+    run = "Tasks.lua",
   },
   [ "114edfc04a1ab03541bdc80ce064f66a7cfcedbb" ] = {
     title = "Recorder",
diff --git a/sys/extensions/0.splash.lua b/sys/extensions/0.splash.lua
deleted file mode 100644
index 2c19af0..0000000
--- a/sys/extensions/0.splash.lua
+++ /dev/null
@@ -1,44 +0,0 @@
-if false then
-  local colors = _G.colors
-  local term   = _G.term
-  local window = _G.window
-
-  local terminal = term.current()
-  local w, h = term.getSize()
-
-  local splashWindow = window.create(terminal.parent, 1, 1, w, h, false)
-  splashWindow.setTextColor(colors.white)
-  if splashWindow.isColor() then
-    splashWindow.setBackgroundColor(colors.black)
-    splashWindow.clear()
-    local opus = {
-      'fffff00',
-      'ffff07000',
-      'ff00770b00 4444',
-      'ff077777444444444',
-      'f07777744444444444',
-      'f0000777444444444',
-      '070000111744444',
-      '777770000',
-      '7777000000',
-      '70700000000',
-      '077000000000',
-    }
-    for k,line in ipairs(opus) do
-      splashWindow.setCursorPos((w - 18) / 2, k + (h - #opus) / 2)
-      splashWindow.blit(string.rep(' ', #line), string.rep('a', #line), line)
-    end
-  end
-
-  local str = 'Loading Opus OS...'
-  print(str)
-  splashWindow.setCursorPos((w - #str) / 2, h)
-  splashWindow.write(str)
-
-  terminal.setVisible(false)
-  splashWindow.setVisible(true)
-
-  kernel.hook('kernel_ready', function()
-    kernel.window.setVisible(true)
-  end)
-end
diff --git a/sys/extensions/4.label.lua b/sys/extensions/4.label.lua
index 86a079c..8878598 100644
--- a/sys/extensions/4.label.lua
+++ b/sys/extensions/4.label.lua
@@ -1,7 +1,7 @@
+local os = _G.os
+
 -- Default label
 if not os.getComputerLabel() then
-  showStatus('Setting computer label')
-
   local id = os.getComputerID()
   if _G.turtle then
     os.setComputerLabel('turtle_' .. id)
diff --git a/sys/extensions/4.user.lua b/sys/extensions/4.user.lua
index e922f11..5676d29 100644
--- a/sys/extensions/4.user.lua
+++ b/sys/extensions/4.user.lua
@@ -11,8 +11,8 @@ end
 if not fs.exists('usr/autorun') then
   fs.makeDir('usr/autorun')
 end
-if not fs.exists('usr/etc/fstab') then
-  Util.writeFile('usr/etc/fstab', 'usr gitfs kepler155c/opus-apps/' .. _ENV.BRANCH)
+if not fs.exists('usr/config/fstab') then
+  Util.writeFile('usr/config/fstab', 'usr gitfs kepler155c/opus-apps/' .. _ENV.BRANCH)
 end
 
 if not fs.exists('usr/config/shell') then
@@ -35,4 +35,4 @@ end
 shell.setPath(config.path)
 shell.setEnv('LUA_PATH', config.lua_path)
 
-fs.loadTab('usr/etc/fstab')
+fs.loadTab('usr/config/fstab')
diff --git a/sys/extensions/3.network.lua b/sys/extensions/5.network.lua
similarity index 99%
rename from sys/extensions/3.network.lua
rename to sys/extensions/5.network.lua
index f045293..9b4b43c 100644
--- a/sys/extensions/3.network.lua
+++ b/sys/extensions/5.network.lua
@@ -21,3 +21,4 @@ if _G.device.wireless_modem then
 	startNetwork()
 	os.sleep(0) -- give the network a cycle to start
 end
+
diff --git a/sys/extensions/7.multishell.lua b/sys/extensions/7.multishell.lua
index 94cd2e1..4376cc3 100644
--- a/sys/extensions/7.multishell.lua
+++ b/sys/extensions/7.multishell.lua
@@ -54,7 +54,7 @@ local function redrawMenu()
 end
 
 function multishell.getFocus()
-  local currentTab = kernel.routines[1]
+  local currentTab = kernel.getFocused()
   return currentTab.uid
 end
 
@@ -70,9 +70,7 @@ end
 function multishell.setTitle(tabId, title)
   local tab = kernel.find(tabId)
   if tab then
-    if not tab.isOverview then
-      tab.title = title or ''
-    end
+    tab.title = title
     redrawMenu()
   end
 end
@@ -105,15 +103,15 @@ end
 
 function multishell.openTab(tab)
   if not tab.title and tab.path then
-    tab.title = fs.getName(tab.path)
+    tab.title = fs.getName(tab.path):match('([^%.]+)')
   end
   tab.title = tab.title or 'untitled'
-  tab.window = window.create(parentTerm, 1, 2, w, h - 1, false)
-  tab.terminal = tab.window
+  tab.window = tab.window or window.create(parentTerm, 1, 2, w, h - 1, false)
+  tab.terminal = tab.terminal or tab.window
 
   local routine = kernel.newRoutine(tab)
 
-  tab.co = coroutine.create(function()
+  routine.co = coroutine.create(function()
     local result, err
 
     if tab.fn then
@@ -128,9 +126,9 @@ function multishell.openTab(tab)
       if err then
         printError(tostring(err))
       end
-      printError('Press enter to close')
-      tab.isDead = true
-      tab.hidden = false
+      print('\nPress enter to close')
+      routine.isDead = true
+      routine.hidden = false
       while true do
         local e, code = os.pullEventRaw('key')
         if e == 'terminate' or e == 'key' and code == keys.enter then
@@ -147,8 +145,7 @@ function multishell.openTab(tab)
   else
     redrawMenu()
   end
-
-  return tab.uid
+  return routine.uid
 end
 
 function multishell.hideTab(tabId)
@@ -217,10 +214,9 @@ kernel.hook('multishell_redraw', function()
   parentTerm.setCursorPos(1, 1)
   parentTerm.clearLine()
 
-  local currentTab = kernel.routines[1]
+  local currentTab = kernel.getFocused()
 
   for _,tab in pairs(kernel.routines) do
-tab.title = tab.env._APP_TITLE or tab.title
     if tab.hidden and tab ~= currentTab then
       tab.width = 0
     else
@@ -241,7 +237,8 @@ tab.title = tab.env._APP_TITLE or tab.title
   end
 
   local function compareTab(a, b)
-    return b.hidden and -1 or a.uid < b.uid
+    if a.hidden then return false end
+    return b.hidden or a.uid < b.uid
   end
 
   local tabX = 0
@@ -295,12 +292,12 @@ end)
 
 kernel.hook('mouse_click', function(_, eventData)
   local x, y = eventData[2], eventData[3]
-  local currentTab = kernel.routines[1]
 
   if y == 1 then
     if x == 1 then
       multishell.setFocus(overviewId)
     elseif x == w then
+      local currentTab = kernel.getFocused()
       if currentTab then
         multishell.terminate(currentTab.uid)
       end
@@ -344,6 +341,7 @@ local function startup()
     for _,file in ipairs(files) do
       os.sleep(0)
       local result, err = open(directory .. '/' .. file)
+
       if result then
         if term.isColor() then
           term.setTextColor(colors.green)
@@ -362,6 +360,7 @@ local function startup()
         if err then
           _G.printError('\n' .. err)
         end
+        print()
         success = false
       end
     end
@@ -383,8 +382,8 @@ kernel.hook('kernel_ready', function()
     path = 'sys/apps/Overview.lua',
     isOverview = true,
     focused = true,
+    title = '+',
   })
-  kernel.find(overviewId).title = '+'
 
   multishell.openTab({
     fn = startup,
diff --git a/sys/kernel.lua b/sys/kernel.lua
index 9fcb6a4..5f519cd 100644
--- a/sys/kernel.lua
+++ b/sys/kernel.lua
@@ -1,6 +1,7 @@
 _G.requireInjector()
 
-local Util = require('util')
+local Terminal = require('terminal')
+local Util     = require('util')
 
 _G.kernel = {
   UID = 0,
@@ -19,6 +20,8 @@ local w, h = term.getSize()
 kernel.terminal = term.current()
 kernel.window = window.create(kernel.terminal, 1, 1, w, h, false)
 
+Terminal.scrollable(kernel.window)
+
 local focusedRoutineEvents = Util.transpose {
   'char', 'key', 'key_up',
   'mouse_click', 'mouse_drag', 'mouse_scroll', 'mouse_up',
@@ -73,16 +76,17 @@ function Routine:resume(event, ...)
     local ok, result = coroutine.resume(self.co, event, ...)
     kernel.running = previous
 
-    self.terminal = term.current()
-    term.redirect(previousTerm)
-
     if ok then
       self.filter = result
     else
       _G.printError(result)
-      if self.haltOnError then
-        error(result)
-      end
+    end
+
+    self.terminal = term.current()
+    term.redirect(previousTerm)
+
+    if not ok and self.haltOnError then
+      error(result)
     end
     if coroutine.status(self.co) == 'dead' then
       Util.removeByValue(kernel.routines, self)
@@ -108,14 +112,15 @@ end
 function kernel.newRoutine(args)
   kernel.UID = kernel.UID + 1
 
-  args = args or { }
+  local routine = setmetatable({
+    uid = kernel.UID,
+    timestamp = os.clock(),
+    terminal = kernel.window,
+    window = kernel.window,
+  }, { __index = Routine })
 
-  local routine = setmetatable(args, { __index = Routine })
-  routine.uid = kernel.UID
-  routine.timestamp = os.clock()
+  Util.merge(routine, args)
   routine.env = args.env or Util.shallowCopy(shell.getEnv())
-  routine.terminal = args.terminal or kernel.window
-  routine.window = args.window or kernel.window
 
   return routine
 end
@@ -242,6 +247,7 @@ local function init(...)
 
   local runLevel = #args > 0 and 6 or 7
 
+  print('Starting Opus OS')
   local dir = 'sys/extensions'
   local files = fs.list(dir)
   table.sort(files)
@@ -252,6 +258,7 @@ local function init(...)
       if not s then
         error(m)
       end
+      os.sleep(0)
     end
   end
 
@@ -264,6 +271,7 @@ local function init(...)
         path = 'sys/apps/shell',
         args = args,
         haltOnExit = true,
+        haltOnError = true,
         terminal = kernel.terminal,
       })
       if s then
diff --git a/sys/network/transport.lua b/sys/network/transport.lua
index 8c290ee..fea060b 100644
--- a/sys/network/transport.lua
+++ b/sys/network/transport.lua
@@ -13,12 +13,16 @@ local computerId = os.getComputerID()
 local transport = {
   timers  = { },
   sockets = { },
+  UID = 0,
 }
 _G.transport = transport
 
 function transport.open(socket)
+  transport.UID = transport.UID + 1
+
   transport.sockets[socket.sport] = socket
   socket.activityTimer = os.clock()
+  socket.uid = transport.UID
 end
 
 function transport.read(socket)
@@ -78,9 +82,11 @@ Event.on('modem_message', function(_, _, dport, dhost, msg, distance)
 
       if msg.type == 'DISC' then
         -- received disconnect from other end
+        if socket.connected then
+          os.queueEvent('transport_' .. socket.uid)
+        end
         socket.connected = false
         socket:close()
-        os.queueEvent('transport_' .. socket.sport)
 
       elseif msg.type == 'ACK' then
         local ackTimerId = socket.timers[msg.seq]
@@ -109,7 +115,7 @@ Event.on('modem_message', function(_, _, dport, dhost, msg, distance)
 
           -- use resume instead ??
           if not socket.messages[2] then  -- table size is 1
-            os.queueEvent('transport_' .. socket.sport)
+            os.queueEvent('transport_' .. socket.uid)
           end
 
           --debug('>> ' .. Util.tostring({ type = 'ACK', seq = msg.seq }))
diff --git a/sys/services/log.lua b/sys/services/log.lua
index 35dad8a..40b24b0 100644
--- a/sys/services/log.lua
+++ b/sys/services/log.lua
@@ -1,67 +1,26 @@
-_G.requireInjector()
+_G.requireInjector(_ENV)
 
 --[[
-  Adds the control-d hotkey to view the kernel log.
-]]
-
-local Terminal = require('terminal')
+  Adds a task and the control-d hotkey to view the kernel log.
+--]]
 
 local kernel     = _G.kernel
 local keyboard   = _G.device.keyboard
 local multishell = _ENV.multishell
 local os         = _G.os
 local term       = _G.term
-local window     = _G.window
 
-if multishell and multishell.setTitle then
+if multishell then
   multishell.setTitle(multishell.getCurrent(), 'System Log')
 end
 
--- jump through a lot of hoops to get around window api limitations
--- mainly failing to provide access to window buffer or knowledge of parent
--- need: window.getParent()
---       window.copy(target)
-
-local terminal = _G.kernel.terminal
 local w, h = kernel.window.getSize()
-local win = window.create(kernel.window, 1, 1, w, h + 50, false)
-
--- copy windows contents from parent window to child
-local oblit, oscp = terminal.blit, terminal.setCursorPos
-kernel.window.setVisible(false)
-terminal.blit = function(...)
-  win.blit(...)
-end
-terminal.setCursorPos = function(...)
-  win.setCursorPos(...)
-end
-kernel.window.setVisible(true)
-
--- position and resize window for multishell (but don't update screen)
-terminal.blit = function() end
-terminal.setCursorPos = function() end
 kernel.window.reposition(1, 2, w, h - 1)
 
--- restore original terminal
-terminal.blit = oblit
-terminal.setCursorPos = oscp
-
--- add scrolling methods
-Terminal.scrollable(win, kernel.window)
-
--- update kernel with new window, set this tab with the new kernal window
 local routine = kernel.getCurrent()
-for _,r in pairs(kernel.routines) do
-  if r.terminal == kernel.window then
-    r.terminal = win
-    r.window = win
-  end
-end
---kernel.terminal = win
-kernel.window = win
-routine.terminal = win
-routine.window = win
-term.redirect(routine.window)
+routine.terminal = kernel.window
+routine.window = kernel.window
+term.redirect(kernel.window)
 
 local previousId
 
@@ -69,8 +28,8 @@ kernel.hook('mouse_scroll', function(_, eventData)
   local dir, y = eventData[1], eventData[3]
 
   if y > 1 then
-    local currentTab = kernel.routines[1]
-    if currentTab.terminal.scrollUp then
+    local currentTab = kernel.getFocused()
+    if currentTab.terminal.scrollUp and not currentTab.terminal.noAutoScroll then
       if dir == -1 then
         currentTab.terminal.scrollUp()
       else