diff --git a/src/Color.cpp b/src/Color.cpp
index df21cdda7..a53730461 100644
--- a/src/Color.cpp
+++ b/src/Color.cpp
@@ -24,6 +24,9 @@
 //     USA
 //
 ////////////////////////////////////////////////////////////////////////////////
+
+#define L10N                                           // Localization complete.
+
 #include <iostream>
 #include <iomanip>
 #include <sstream>
@@ -150,7 +153,7 @@ Color::Color (const std::string& spec)
     {
       index = atoi (word.substr (4).c_str ());
       if (index < 0 || index > 23)
-        throw std::string ("The color '") + *it + "' is not recognized.";
+        throw format (STRING_COLOR_UNRECOGNIZED, *it);
 
       if (bg)
       {
@@ -172,7 +175,7 @@ Color::Color (const std::string& spec)
       index = atoi (word.substr (3).c_str ());
       if (word.length () != 6 ||
           index < 0 || index > 555)
-        throw std::string ("The color '") + *it + "' is not recognized.";
+        throw format (STRING_COLOR_UNRECOGNIZED, *it);
 
       int r = atoi (word.substr (3, 1).c_str ());
       int g = atoi (word.substr (4, 1).c_str ());
@@ -180,7 +183,7 @@ Color::Color (const std::string& spec)
       if (r < 0 || r > 5 ||
           g < 0 || g > 5 ||
           b < 0 || b > 5)
-        throw std::string ("The color '") + *it + "' is not recognized.";
+        throw format (STRING_COLOR_UNRECOGNIZED, *it);
 
       index = 16 + r*36 + g*6 + b;
 
@@ -203,7 +206,7 @@ Color::Color (const std::string& spec)
     {
       index = atoi (word.substr (5).c_str ());
       if (index < 0 || index > 255)
-        throw std::string ("The color '") + *it + "' is not recognized.";
+        throw format (STRING_COLOR_UNRECOGNIZED, *it);
 
       upgrade ();
 
@@ -221,7 +224,7 @@ Color::Color (const std::string& spec)
       }
     }
     else if (word != "")
-      throw std::string ("The color '") + *it + "' is not recognized.";
+      throw format (STRING_COLOR_UNRECOGNIZED, *it);
   }
 
   // Now combine the fg and bg into a single color.
diff --git a/src/Permission.cpp b/src/Permission.cpp
index 4b706f272..181002e10 100644
--- a/src/Permission.cpp
+++ b/src/Permission.cpp
@@ -29,8 +29,11 @@
 #include <Permission.h>
 #include <Context.h>
 #include <util.h>
+#include <text.h>
 #include <i18n.h>
 
+#define L10N                                           // Localization complete.
+
 extern Context context;
 
 ////////////////////////////////////////////////////////////////////////////////
@@ -56,16 +59,14 @@ bool Permission::confirmed (const Task& task, const std::string& question)
   if (allConfirmed)
     return true;
 
-  std::cout << "\nTask "
-            << task.id
-            << " \""
-            << task.get ("description")
-            << "\"";
+  std::cout << "\n"
+            << format (STRING_PERM_TASK_LINE, task.id, task.get ("description"));
 
   if (task.getStatus () == Task::recurring ||
       task.has ("parent"))
   {
-    std::cout << " (Recurring)";
+    std::cout << " "
+              << STRING_PERM_RECURRING;
   }
 
   std::cout << std::endl;  // Flush.
diff --git a/src/Taskmod.cpp b/src/Taskmod.cpp
index 6b312fcac..191829fb5 100644
--- a/src/Taskmod.cpp
+++ b/src/Taskmod.cpp
@@ -25,8 +25,11 @@
 //
 ////////////////////////////////////////////////////////////////////////////////
 
+#define L10N                                           // Localization complete.
+
 #include <sstream>
 #include <iostream>
+#include <i18n.h>
 #include <assert.h>
 #include <Taskmod.h>
 
@@ -130,9 +133,7 @@ bool Taskmod::isValid ()
 std::string Taskmod::getUuid ()
 {
   if (!bAfterSet)
-  {
-    throw std::string ("Taskmod::getUuid(): Task object not initialized.");
-  }
+    throw std::string (STRING_TASKMOD_BAD_INIT);
 
   return after.get ("uuid");
 }
@@ -143,14 +144,14 @@ std::string Taskmod::toString ()
   assert (bAfterSet);
 
   std::stringstream stream;
-  stream << "time " << timestamp << "\n";
+  stream << STRING_TASKMOD_TIME << timestamp << "\n";
 
   if (bBeforeSet)
   {
-    stream << "old " << before.composeF4();
+    stream << STRING_TASKMOD_OLD << before.composeF4();
   }
 
-  stream << "new " << after.composeF4();
+  stream << STRING_TASKMOD_NEW << after.composeF4();
   stream << "---\n";
 
   return stream.str ();
@@ -202,3 +203,5 @@ std::string Taskmod::getTimeStr () const
 
   return sstream.str ();
 }
+
+////////////////////////////////////////////////////////////////////////////////
diff --git a/src/Transport.cpp b/src/Transport.cpp
index 35c50049b..ae6f57bbb 100644
--- a/src/Transport.cpp
+++ b/src/Transport.cpp
@@ -25,6 +25,8 @@
 //
 ////////////////////////////////////////////////////////////////////////////////
 
+#define L10N                                           // Localization complete.
+
 #include <iostream>
 #include <stdlib.h>
 #include <util.h>
diff --git a/src/Uri.cpp b/src/Uri.cpp
index a159e1b50..46357ac9e 100644
--- a/src/Uri.cpp
+++ b/src/Uri.cpp
@@ -25,7 +25,11 @@
 //
 ////////////////////////////////////////////////////////////////////////////////
 
+#define L10N                                           // Localization complete.
+
 #include <Context.h>
+#include <text.h>
+#include <i18n.h>
 #include <Uri.h>
 
 extern Context context;
@@ -231,7 +235,7 @@ void Uri::parse ()
     }
     else
     {
-      throw std::string ("Could not parse uri '") + data + "', wrong usage of single quotes.";
+      throw std::string (format (STRING_URI_QUOTES, data));
     }
   }
   else
@@ -252,7 +256,7 @@ void Uri::parse ()
   }
   else
   {
-    throw std::string ("The uri '") + data + "' is not in the expected format.";
+    throw std::string (format (STRING_URI_BAD_FORMAT, data));
   }
 
   // path is absolute for ssh:// syntax
diff --git a/src/ViewTask.cpp b/src/ViewTask.cpp
index b87add4df..bffadbfed 100644
--- a/src/ViewTask.cpp
+++ b/src/ViewTask.cpp
@@ -25,6 +25,8 @@
 //
 ////////////////////////////////////////////////////////////////////////////////
 
+#define L10N                                           // Localization complete.
+
 #include <ViewTask.h>
 #include <Context.h>
 #include <Timer.h>
@@ -104,8 +106,6 @@ std::string ViewTask::render (std::vector <Task>& data, std::vector <int>& seque
   // Determine minimal, ideal column widths.
   std::vector <int> minimal;
   std::vector <int> ideal;
-//  std::vector <int> avg_ideal;
-//  int cumulative_ideal = 0;
 
   std::vector <Column*>::iterator i;
   for (i = _columns.begin (); i != _columns.end (); ++i)
@@ -129,17 +129,10 @@ std::string ViewTask::render (std::vector <Task>& data, std::vector <int>& seque
 
       if (min   > global_min)   global_min = min;
       if (ideal > global_ideal) global_ideal = ideal;
-
-//      cumulative_ideal += ideal;
     }
 
     minimal.push_back (global_min);
     ideal.push_back (global_ideal);
-
-//    if (data.size ())
-//      avg_ideal.push_back ((int) (cumulative_ideal / data.size ()));
-//    else
-//      avg_ideal.push_back (0);
   }
 
   // Sum the minimal widths.
@@ -163,7 +156,6 @@ std::string ViewTask::render (std::vector <Task>& data, std::vector <int>& seque
   if (_width == 0 || sum_ideal <= overage)
     widths = ideal;
   else if (sum_minimal > overage || overage < 0)
-//    throw std::string ("There is not enough horizontal width to display the results.");
     widths = minimal;
   else if (overage > 0)
   {
diff --git a/src/ViewText.cpp b/src/ViewText.cpp
index 287942b3b..a00445047 100644
--- a/src/ViewText.cpp
+++ b/src/ViewText.cpp
@@ -25,6 +25,8 @@
 //
 ////////////////////////////////////////////////////////////////////////////////
 
+#define L10N                                           // Localization complete.
+
 #include <ViewText.h>
 #include <Context.h>
 #include <Timer.h>
@@ -152,7 +154,6 @@ std::string ViewText::render ()
   if (sum_ideal <= overage)
     widths = ideal;
   else if (sum_minimal > overage || overage < 0)
-//    throw std::string ("There is not enough horizontal width to display the results.");
     widths = minimal;
   else if (overage > 0)
   {
diff --git a/src/commands/CmdExec.cpp b/src/commands/CmdExec.cpp
index 5ee2e40ce..9f55f3df4 100644
--- a/src/commands/CmdExec.cpp
+++ b/src/commands/CmdExec.cpp
@@ -25,8 +25,11 @@
 //
 ////////////////////////////////////////////////////////////////////////////////
 
+#define L10N                                           // Localization complete.
+
 #include <stdlib.h>
 #include <Context.h>
+#include <i18n.h>
 #include <CmdExec.h>
 
 extern Context context;
@@ -36,7 +39,7 @@ CmdExec::CmdExec ()
 {
   _keyword     = "execute";
   _usage       = "task execute <external command>";
-  _description = "Executes external commands and scripts";
+  _description = STRING_CMD_EXEC_USAGE;
   _read_only   = false;
   _displays_id = true;
 }
diff --git a/src/commands/CmdUrgency.cpp b/src/commands/CmdUrgency.cpp
index 54c9137ef..01bb242e0 100644
--- a/src/commands/CmdUrgency.cpp
+++ b/src/commands/CmdUrgency.cpp
@@ -25,10 +25,14 @@
 //
 ////////////////////////////////////////////////////////////////////////////////
 
+#define L10N                                           // Localization complete.
+
 #include <sstream>
 #include <stdlib.h>
 #include <Context.h>
 #include <main.h>
+#include <text.h>
+#include <i18n.h>
 #include <CmdUrgency.h>
 
 extern Context context;
@@ -38,7 +42,7 @@ CmdUrgency::CmdUrgency ()
 {
   _keyword     = "_urgency";
   _usage       = "task _urgency <IDs>";
-  _description = "Displays the urgency measure of a task.";
+  _description = STRING_CMD_URGENCY_USAGE;
   _read_only   = true;
   _displays_id = false;
 }
@@ -60,7 +64,7 @@ int CmdUrgency::execute (std::string& output)
 
   if (filtered.size () == 0)
   {
-    context.footnote ("No tasks specified.");
+    context.footnote (STRING_CMD_URGENCY_NO_TASKS);
     return 1;
   }
 
@@ -68,10 +72,7 @@ int CmdUrgency::execute (std::string& output)
   std::stringstream out;
   std::vector <Task>::iterator task;
   for (task = filtered.begin (); task != filtered.end (); ++task)
-    out << "task "
-        << task->id
-        << " urgency "
-        << task->urgency ()
+    out << format (STRING_CMD_URGENCY_RESULT, task->id, task->urgency ())
         << "\n";
 
   output = out.str ();
diff --git a/src/en-US.h b/src/en-US.h
index 3c346ed58..62b23af6f 100644
--- a/src/en-US.h
+++ b/src/en-US.h
@@ -102,6 +102,9 @@
 #define STRING_API_WARNING           "Warning: {1}"
 #define STRING_API_ERROR             "Error: {1}"
 
+// Color
+#define STRING_COLOR_UNRECOGNIZED    "The color '{1}' is not recognized."
+
 // columns/Col*
 #define STRING_COLUMN_BAD_NAME       "Unrecognized column name '{1}'"
 #define STRING_COLUMN_BAD_FORMAT     "Unrecognized column format '{1}.{2}'"
@@ -150,6 +153,10 @@
 #define STRING_CMD_VERSION_COPY2     "Portions of this software Copyright (C) 1994 – 2008 Lua.org, PUC-Rio."
 #define STRING_CMD_LOGO_USAGE        "Displays the Taskwarrior logo"
 #define STRING_CMD_LOGO_COLOR_REQ    "The logo command requires that color support is enabled."
+#define STRING_CMD_EXEC_USAGE        "Executes external commands and scripts"
+#define STRING_CMD_URGENCY_USAGE     "Displays the urgency measure of a task."
+#define STRING_CMD_URGENCY_NO_TASKS  "No tasks specified."
+#define STRING_CMD_URGENCY_RESULT    "task {1} urgency {2}"
 
 // Config
 #define STRING_CONFIG_OVERNEST       "Configuration file nested to more than 10 levels deep - this has to be a mistake."
@@ -182,6 +189,10 @@
 #define STRING_LUA_BAD_HOOK_DEF      "Malformed hook definition '{1}'."
 #define STRING_LUA_BAD_EVENT         "Unrecognized hook event '{1}'."
 
+// Permission
+#define STRING_PERM_TASK_LINE        "task {1} \"{2}\""
+#define STRING_PERM_RECURRING        "(Recurring)"
+
 // Record
 #define STRING_RECORD_EMPTY          "Empty record in input."
 #define STRING_RECORD_JUNK_AT_EOL    "Unrecognized characters at end of line."
@@ -202,10 +213,20 @@
 #define STRING_CMD_SHOW_CONF_VAR     "Config Variable"
 #define STRING_CMD_SHOW_CONF_VALUE   "Value"
 
+// Taskmod
+#define STRING_TASKMOD_BAD_INIT      "Taskmod::getUuid(): Task object not initialized."
+#define STRING_TASKMOD_TIME          "time "
+#define STRING_TASKMOD_OLD           "old "
+#define STRING_TASKMOD_NEW           "new "
+
 // text
                                      // A comma-separated list of commands is appended.
 #define STRING_TEXT_AMBIGUOUS        "Ambiguous {1} '{2}' - could be either of "
 
+// Uri
+#define STRING_URI_QUOTES            "Could not parse uri '{1}', wrong usage of single quotes."
+#define STRING_URI_BAD_FORMAT        "The uri '{1}' is not in the expected format."
+
 // utf8
 #define STRING_UTF8_INVALID_CP_REP   "Invalid codepoint representation."
 #define STRING_UTF8_INVALID_CP       "Invalid Unicode codepoint."
diff --git a/src/text.cpp b/src/text.cpp
index 6041a3fab..daf908018 100644
--- a/src/text.cpp
+++ b/src/text.cpp
@@ -890,6 +890,18 @@ const std::string format (
   return output;
 }
 
+////////////////////////////////////////////////////////////////////////////////
+const std::string format (
+  const std::string& fmt,
+  int arg1,
+  double arg2)
+{
+  std::string output = fmt;
+  replace_positional (output, "{1}", format (arg1));
+  replace_positional (output, "{2}", format (arg2, 6, 3));
+  return output;
+}
+
 ////////////////////////////////////////////////////////////////////////////////
 const std::string format (
   const std::string& fmt,
diff --git a/src/text.h b/src/text.h
index 556244856..073917fe6 100644
--- a/src/text.h
+++ b/src/text.h
@@ -78,6 +78,7 @@ const std::string format (const std::string&, const std::string&, const std::str
 const std::string format (const std::string&, const std::string&, int);
 const std::string format (const std::string&, int, const std::string&);
 const std::string format (const std::string&, int, int);
+const std::string format (const std::string&, int, double);
 const std::string format (const std::string&, const std::string&, const std::string&, const std::string&);
 
 std::string leftJustify (const int, const int);