diff --git a/sys/apis/ui.lua b/sys/apis/ui.lua
index 7496f94..6de7bce 100644
--- a/sys/apis/ui.lua
+++ b/sys/apis/ui.lua
@@ -6,7 +6,6 @@ local Util       = require('util')
 
 local _rep       = string.rep
 local _sub       = string.sub
-local clipboard  = _G.clipboard
 local colors     = _G.colors
 local device     = _G.device
 local fs         = _G.fs
@@ -1672,7 +1671,7 @@ function UI.Grid:eventHandler(event)
     end
   elseif event.type == 'copy' then
     if self.selected then
-      clipboard.setData(Util.tostring(self.selected))
+      os.queueEvent('clipboard_copy', Util.tostring(self.selected))
     end
   else
     return false
@@ -2689,7 +2688,7 @@ function UI.TextEntry:eventHandler(event)
     return true
 
   elseif event.type == 'copy' then
-    clipboard.setData(self.value)
+    os.queueEvent('clipboard_copy', self.value)
 
   elseif event.type == 'paste' then
     local input = tostring(self.value)
diff --git a/sys/apps/Lua.lua b/sys/apps/Lua.lua
index de3b674..e46d836 100644
--- a/sys/apps/Lua.lua
+++ b/sys/apps/Lua.lua
@@ -7,13 +7,14 @@ local Peripheral = require('peripheral')
 local UI         = require('ui')
 local Util       = require('util')
 
-local clipboard  = _G.clipboard
+local colors     = _G.colors
 local multishell = _ENV.multishell
+local os         = _G.os
 local textutils  = _G.textutils
 
 local sandboxEnv = setmetatable(Util.shallowCopy(_ENV), { __index = _G })
 sandboxEnv.exit = function() Event.exitPullEvents() end
-sandboxEnv._echo = function( ... ) return ... end
+sandboxEnv._echo = function( ... ) return { ... } end
 injector(sandboxEnv)
 
 multishell.setTitle(multishell.getCurrent(), 'Lua')
@@ -21,6 +22,7 @@ UI:configure('Lua', ...)
 
 local command = ''
 local history = History.load('usr/.lua_history', 25)
+local extChars = Util.getVersion() > 1.76
 
 local page = UI.Page {
   menuBar = UI.MenuBar {
@@ -42,6 +44,10 @@ local page = UI.Page {
       [ 'control-space' ] = 'autocomplete',
     },
   },
+  indicator = UI.Text {
+    backgroundColor = colors.black,
+    y = 2, x = -1, width = 1,
+  },
   grid = UI.ScrollingGrid {
     y = 3,
     columns = {
@@ -54,6 +60,17 @@ local page = UI.Page {
   notification = UI.Notification(),
 }
 
+function page.indicator:showResult(s)
+  local values = {
+    [ true  ] = { c = colors.green, i = (extChars and '\003') or '+' },
+    [ false ] = { c = colors.red,   i = 'x' }
+  }
+
+  self.textColor = values[s].c
+  self.value = values[s].i
+  self:draw()
+end
+
 function page:setPrompt(value, focus)
   self.prompt:setValue(value)
   self.prompt.scroll = 0
@@ -76,7 +93,6 @@ function page:enable()
 end
 
 local function autocomplete(env, oLine, x)
-
   local sLine = oLine:sub(1, x)
   local nStartPos = sLine:find("[a-zA-Z0-9_%.]+$")
   if nStartPos then
@@ -109,7 +125,6 @@ local function autocomplete(env, oLine, x)
 end
 
 function page:eventHandler(event)
-
   if event.type == 'global' then
     self:setPrompt('', true)
     self:executeStatement('_G')
@@ -220,7 +235,6 @@ function page:setResult(result)
 end
 
 function page.grid:eventHandler(event)
-
   local entry = self:getSelected()
 
   local function commandAppend()
@@ -255,8 +269,8 @@ function page.grid:eventHandler(event)
     page:setPrompt(commandAppend(), true)
     page:executeStatement(commandAppend())
   elseif event.type == 'copy' then
-    if entry and clipboard then
-      clipboard.setData(entry.rawValue)
+    if entry then
+      os.queueEvent('clipboard_copy', entry.rawValue)
     end
   else
     return UI.ScrollingGrid.eventHandler(self, event)
@@ -265,10 +279,16 @@ function page.grid:eventHandler(event)
 end
 
 function page:rawExecute(s)
-  local fn, m = load('return _echo(' ..s.. ');', 'lua', nil, sandboxEnv)
+  local fn, m
+
+  fn = load('return (' ..s.. ')', 'lua', nil, sandboxEnv)
+
   if fn then
-    m = { pcall(fn) }
-    fn = table.remove(m, 1)
+    fn = load('return {' ..s.. '}', 'lua', nil, sandboxEnv)
+  end
+
+  if fn then
+    fn, m = pcall(fn)
     if #m == 1 then
       m = m[1]
     end
@@ -284,7 +304,6 @@ function page:rawExecute(s)
 end
 
 function page:executeStatement(statement)
-
   command = statement
 
   local s, m = self:rawExecute(command)
@@ -298,6 +317,7 @@ function page:executeStatement(statement)
       self.notification:error(m, 5)
     end
   end
+  self.indicator:showResult(not not s)
 end
 
 local args = { ... }
diff --git a/sys/apps/multishell b/sys/apps/multishell
index ed967b1..278a7dc 100644
--- a/sys/apps/multishell
+++ b/sys/apps/multishell
@@ -27,6 +27,8 @@ local overviewTab
 local runningTab
 local tabsDirty = false
 local closeInd = '*'
+local redrawTimer
+local hooks = { }
 
 multishell.term = term.current()
 
@@ -417,16 +419,38 @@ function multishell.getCount()
   return Util.size(tabs)
 end
 
+function multishell.showMessage(text)
+  parentTerm.setCursorPos(3, 1)
+  parentTerm.setTextColor(_colors.textColor)
+  parentTerm.setBackgroundColor(_colors.backgroundColor)
+  if #text + 3 < w then
+    text = text .. string.rep(' ', w - #text - 3)
+  end
+  parentTerm.write(text)
+  redrawTimer = os.startTimer(2)
+  if currentTab then
+    currentTab.window.restoreCursor()
+  end
+end
+
+function multishell.hook(event, fn)
+  if type(event) == table then
+    for _,v in pairs(event) do
+      multishell.hook(v, fn)
+    end
+  else
+    if not hooks[event] then
+      hooks[event] = { }
+    end
+    table.insert(hooks[event], 1, fn)
+  end
+end
+
 -- control-o - overview
 multishell.addHotkey(24, function()
   multishell.setFocus(overviewTab.tabId)
 end)
 
--- control-t - toggle clipboard mode
-multishell.addHotkey(20, function()
-  _G.clipboard.useInternal(not _G.clipboard.isInternal())
-end)
-
 -- control-backspace
 multishell.addHotkey(14, function()
   local tabId = multishell.getFocus()
@@ -512,11 +536,23 @@ while true do
   -- Get the event
   local tEventData = { os.pullEventRaw() }
   local sEvent = table.remove(tEventData, 1)
+  local passthrough = true
 
   if sEvent == 'key_up' then
     processKeyEvent(sEvent, tEventData[1])
   end
 
+  if sEvent == 'timer' and tEventData[1] == redrawTimer then
+    redrawMenu()
+  end
+
+  local hk = hooks[sEvent]
+  if hk then
+    for _,fn in pairs(hk) do
+      fn(sEvent, tEventData)
+    end
+  end
+
   if sEvent == "term_resize" then
     -- Resize event
     w,h = parentTerm.getSize()
@@ -535,11 +571,7 @@ while true do
     end
 
   elseif sEvent == "paste" then
-    if _G.clipboard.isInternal() then
-      resumeTab(currentTab, sEvent, { _G.clipboard.getText() or '' })
-    else
-      resumeTab(currentTab, sEvent, tEventData)
-    end
+    resumeTab(currentTab, sEvent, tEventData)
 
   elseif sEvent == "char" or
          sEvent == "key" or
@@ -599,7 +631,7 @@ while true do
       end
     end
 
-  else
+  elseif passthrough then
     -- Other event
     -- Passthrough to all processes
     for _,key in pairs(Util.keys(tabs)) do
diff --git a/sys/apps/shell b/sys/apps/shell
index b686461..68f757a 100644
--- a/sys/apps/shell
+++ b/sys/apps/shell
@@ -44,28 +44,21 @@ local function tokenise( ... )
   return tWords
 end
 
-local function run(env, command, ...)
-  if not command then
-    error('No such program')
-  end
-
-  local isUrl = not not command:match("^(https?:)//(([^/:]+):?([0-9]*))(/?.*)$")
-  local path, runFn
+local function run(env, ...)
+  local args = tokenise(...)
+  local command = table.remove(args, 1) or error('No such program')
+  local isUrl = not not command:match("^(https?:)")
 
+  local path, loadFn
   if isUrl then
     path = command
-    runFn = Util.loadUrl
+    loadFn = Util.loadUrl
   else
-    path = shell.resolveProgram(command)
-    runFn = loadfile
+    path = shell.resolveProgram(command) or error('No such program')
+    loadFn = loadfile
   end
 
-  if not path then
-    error('No such program')
-  end
-
-  local fn, err = runFn(path, env)
-
+  local fn, err = loadFn(path, env)
   if not fn then
     error(err)
   end
@@ -80,7 +73,7 @@ local function run(env, command, ...)
     tProgramStack[#tProgramStack + 1] = path
   end
 
-  local r = { fn(table.unpack(tokenise(...))) }
+  local r = { fn(table.unpack(args)) }
 
   tProgramStack[#tProgramStack] = nil
 
@@ -124,7 +117,6 @@ function shell.resolve( _sPath )
 end
 
 function shell.resolveProgram( _sCommand )
-
   if tAliases[_sCommand] ~= nil then
     _sCommand = tAliases[_sCommand]
   end
@@ -299,13 +291,15 @@ function shell.aliases()
   return tCopy
 end
 
-function shell.newTab(tabInfo, path, ...)
+function shell.newTab(tabInfo, ...)
+  local args = tokenise(...)
+  local path = table.remove(args, 1)
   path = shell.resolveProgram(path)
 
   if path then
     tabInfo.path = path
     tabInfo.env = sandboxEnv
-    tabInfo.args = tokenise(...)
+    tabInfo.args = args
     tabInfo.title = fs.getName(path)
 
     if path ~= 'sys/apps/shell' then
@@ -661,10 +655,9 @@ while not bExit do
   end
   term.setTextColour(_colors.textColor)
   if #sLine > 0 then
-    local args = tokenise(sLine)
-    local result, err = shell.run(table.remove(args, 1), table.unpack(args))
+    local result, err = shell.run(sLine)
     if not result and err then
       _G.printError(err)
     end
   end
-end
\ No newline at end of file
+end
diff --git a/sys/extensions/clipboard.lua b/sys/autorun/clipboard.lua
similarity index 53%
rename from sys/extensions/clipboard.lua
rename to sys/autorun/clipboard.lua
index e2ff628..df87bbe 100644
--- a/sys/extensions/clipboard.lua
+++ b/sys/autorun/clipboard.lua
@@ -1,10 +1,9 @@
-if _G.clipboard then
-  return
-end
-
 _G.requireInjector()
+
 local Util = require('util')
-local os   = _G.os
+
+local multishell = _ENV.multishell
+local os         = _G.os
 
 local clipboard = { }
 
@@ -32,8 +31,23 @@ end
 function clipboard.useInternal(mode)
   if mode ~= clipboard.internal then
     clipboard.internal = mode
+    local text = 'Clipboard (^m): ' .. ((mode and 'internal') or 'normal')
+    multishell.showMessage(text)
     os.queueEvent('clipboard_mode', mode)
   end
 end
 
-_G.clipboard = clipboard
+multishell.hook('clipboard_copy', function(_, args)
+  clipboard.setData(args[1])
+end)
+
+multishell.hook('paste', function(_, args)
+  if clipboard.isInternal() then
+    args[1] = clipboard.getText() or ''
+  end
+end)
+
+-- control-m - clipboard mode
+multishell.addHotkey(50, function()
+  clipboard.useInternal(not clipboard.isInternal())
+end)
diff --git a/sys/boot/multishell.boot b/sys/boot/multishell.boot
index ce2db5d..91fbacc 100644
--- a/sys/boot/multishell.boot
+++ b/sys/boot/multishell.boot
@@ -1,4 +1,9 @@
 -- Loads the Opus environment regardless if the file system is local or not
+local colors = _G.colors
+local fs     = _G.fs
+local http   = _G.http
+local shell  = _ENV.shell
+local term   = _G.term
 
 local w, h = term.getSize()
 term.setTextColor(colors.white)
@@ -34,7 +39,7 @@ local BASE     = 'https://raw.githubusercontent.com/' .. GIT_REPO
 local function makeEnv()
   local env = setmetatable({ }, { __index = _G })
   for k,v in pairs(_ENV) do
-    env[k] = v 
+    env[k] = v
   end
   return env
 end
@@ -51,10 +56,10 @@ end
 local function runUrl(file, ...)
   local url = BASE .. '/' .. file
 
-  local h = http.get(url)
-  if h then
-    local fn = load(h.readAll(), url, nil, makeEnv())
-    h.close()
+  local u = http.get(url)
+  if u then
+    local fn = load(u.readAll(), url, nil, makeEnv())
+    u.close()
     if fn then
       return fn(...)
     end
@@ -108,7 +113,7 @@ if config.aliases then
   end
 end
 shell.setPath(config.path)
-LUA_PATH = config.lua_path
+_ENV.LUA_PATH = config.lua_path
 
 -- extensions
 local dir = 'sys/extensions'
diff --git a/sys/network/snmp.lua b/sys/network/snmp.lua
index 123993e..5fd917d 100644
--- a/sys/network/snmp.lua
+++ b/sys/network/snmp.lua
@@ -3,6 +3,12 @@ local GPS    = require('gps')
 local Socket = require('socket')
 local Util   = require('util')
 
+local device     = _G.device
+local multishell = _ENV.multishell
+local network    = _G.network
+local os         = _G.os
+local turtle     = _G.turtle
+
 -- move this into gps api
 local gpsRequested
 local gpsLastPoint
@@ -17,7 +23,7 @@ local function snmpConnection(socket)
     end
 
     if msg.type == 'reboot' then
-      os.reboot()  
+      os.reboot()
 
     elseif msg.type == 'shutdown' then
       os.shutdown()
@@ -26,20 +32,19 @@ local function snmpConnection(socket)
       socket:write('pong')
 
     elseif msg.type == 'script' then
-      local fn, msg = loadstring(msg.args, 'script')
+      local fn, err = loadstring(msg.args, 'script')
       if fn then
         multishell.openTab({
           fn = fn,
-          env = getfenv(1),
           title = 'script',
         })
       else
-        printError(msg)
+        _G.printError(err)
       end
 
     elseif msg.type == 'scriptEx' then
       local s, m = pcall(function()
-        local env = setmetatable(Util.shallowCopy(getfenv(1)), { __index = _G })
+        local env = setmetatable(Util.shallowCopy(_ENV), { __index = _G })
         local fn, m = load(msg.args, 'script', nil, env)
         if not fn then
           error(m)
@@ -110,7 +115,7 @@ end)
 device.wireless_modem.open(999)
 print('discovery: listening on port 999')
 
-Event.on('modem_message', function(e, s, sport, id, info, distance)
+Event.on('modem_message', function(_, _, sport, id, info, distance)
   if sport == 999 and tonumber(id) and type(info) == 'table' then
     if not network[id] then
       network[id] = { }
diff --git a/sys/services/chat.lua b/sys/services/chat.lua
index 8ac7c45..4052f90 100644
--- a/sys/services/chat.lua
+++ b/sys/services/chat.lua
@@ -2,7 +2,7 @@ local device     = _G.device
 local multishell = _ENV.multishell
 local os         = _G.os
 
-if device.wireless_modem then
+if device.wireless_modem and false then
 
 	multishell.setTitle(multishell.getCurrent(), 'Chat')