diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 76c6eb6..92fcb93 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -25,8 +25,7 @@ configure_file(
 #-------------------------------------------------------------------------------
 
 add_subdirectory(screen)
-add_subdirectory(translator/line_number_ascii)
-add_subdirectory(translator/line_number_unicode)
+add_subdirectory(translator/frame)
 add_subdirectory(translator/planar_graph)
 add_subdirectory(translator/sequence)
 
@@ -71,8 +70,7 @@ if (Web)
     translator/Translator.cpp
   )
   target_link_libraries(main.js
-    translator_line_number_ascii
-    translator_line_number_unicode
+    translator_frame
     translator_planar_graph
     translator_sequence
     screen
@@ -86,8 +84,7 @@ else()
     translator/Translator.cpp
   )
   target_link_libraries(main
-    translator_line_number_ascii
-    translator_line_number_unicode
+    translator_frame
     translator_planar_graph
     translator_sequence
     screen
@@ -99,8 +96,7 @@ else()
     input_output_test.cpp
   )
   target_link_libraries(input_output_test
-    translator_line_number_ascii
-    translator_line_number_unicode
+    translator_frame
     translator_planar_graph
     translator_sequence
     antlr4_static
diff --git a/src/index.html b/src/index.html
index a0b6a70..18c53ed 100644
--- a/src/index.html
+++ b/src/index.html
@@ -12,7 +12,7 @@
       <!--Header-->
       <div id="landing_page_content" class="flex">
         <h1>Diagon</h1>
-        <h2><b>Diag</b>ram <b>On</b>line</h2>
+        <h2><b>Diag</b>ram</h2>
         <p>Interactive text→text tools collection.</p>
         <a href="#code_area" id="begin_button">Begin</a>
       </div>
@@ -32,20 +32,26 @@
       <div class="container vertical fill_space">
 
         <!--1 Menu bar-->
-        <div id="menu_bar">
-          <div id="menu_bar_submenu">
+        <div id="menu_bar" class="container horizontal">
+          <!--A Tool selection-->
+          <div class="menu_bar_submenu">
             <label for="tools">Tool:</label>
             <select type="text" id="tools">
               <option>Chargement...</option>
             </select>
           </div>
 
-          <div id="menu_bar_submenu">
+          <!--B Example selection-->
+          <div class="menu_bar_submenu">
             <label for="examples">Example:</label>
             <select type="text" id="examples">
               <option>Chargement...</option>
             </select>
           </div>
+
+          <!--C Options selection selection-->
+          <div class="menu_bar_submenu container horizontal" id="options">
+          </div>
         </div>
 
         <!--2 Input / Output -->
@@ -71,6 +77,7 @@
 
 let tools = document.getElementById('tools');
 let examples = document.getElementById('examples');
+let options = document.getElementById('options');
 let input = document.getElementById('input');
 let output = document.getElementById('output');
 let errors = document.getElementById('errors');
@@ -101,6 +108,55 @@ function UpdateExamples() {
   }
 }
 
+function UpdateOptions() {
+  // Clear.
+  while(options.firstChild) {
+    options.removeChild(options.firstChild);
+  }
+
+  let index = tools.value;
+  let tool = tools_data[index];
+  for(let i in tool.options) {
+    let option = tool.options[i];
+
+    let option_box = document.createElement('p');
+    option_box.className = "option";
+
+    let label = document.createElement('label');
+    label.innerText = option.label + ":";
+    option_box.appendChild(label);
+
+    if (option.type = "checkbox") {
+      let checkbox = document.createElement("input");
+      checkbox.type = "checkbox";
+      checkbox.data = option.name;
+      checkbox.checked = option.default;
+      checkbox.addEventListener("change", UpdateOutput);
+      option_box.appendChild(checkbox);
+    }
+
+    options.appendChild(option_box);
+  }
+}
+
+function GetOptions() {
+  let output = "";
+  let index = tools.value;
+  let tool = tools_data[index];
+  for(let i in tool.options) {
+    let option = tool.options[i];
+    let name;
+    let value;
+    if (option.type = "checkbox") {
+      name = options.childNodes[i].childNodes[1].data;
+      value = options.childNodes[i].childNodes[1].checked;
+    }
+    output += name + "\n";
+    output += value + "\n";
+  }
+  return output;
+}
+
 function UpdateInput() {
   let tool_index = tools.value;
   let example_index = examples.value;
@@ -121,13 +177,14 @@ function UpdateOutput() {
   errors.value = '';
   console.log("tool", tools_data[tools.value].tool, input.value);
   console.log(translate);
-  translate(tools_data[tools.value].tool, input.value);
+  translate(tools_data[tools.value].tool, input.value, GetOptions());
 }
 
 function OnRuntimeInitialized() {
   tools.addEventListener("input", UpdateExamples);
-  examples.addEventListener("input", UpdateInput);
   tools.addEventListener("input", UpdateOutput);
+  tools.addEventListener("input", UpdateOptions);
+  examples.addEventListener("input", UpdateInput);
   input.addEventListener('input', UpdateOutput);
 
   fetch("tools.json")
@@ -136,9 +193,10 @@ function OnRuntimeInitialized() {
     tools_data = data;
     UpdateTools();
     UpdateExamples()
+    UpdateOptions();
     UpdateInput();
     UpdateOutput();
-    translate = Module.cwrap('translate', 'void', ['string','string']);
+    translate = Module.cwrap('translate', 'void', ['string','string', 'string']);
   })
 }
 
diff --git a/src/input_output_test.cpp b/src/input_output_test.cpp
index dc870e5..0b9f216 100644
--- a/src/input_output_test.cpp
+++ b/src/input_output_test.cpp
@@ -23,19 +23,19 @@ int main(int, const char**) {
 
       std::string input_string((std::istreambuf_iterator<char>(input)),
                                std::istreambuf_iterator<char>());
-      std::string output_string((std::istreambuf_iterator<char>(output)),
+      std::string output_expected((std::istreambuf_iterator<char>(output)),
                                 std::istreambuf_iterator<char>());
 
-      translator->Process(input_string);
+      std::string output_computed = (*translator)(input_string, "");
 
-      if (translator->Output() == output_string) {
+      if (output_computed == output_expected) {
         std::cout << "  [PASS] " << test << std::endl;
       } else {
         std::cout << "  [FAIL] " << test << std::endl;
         std::cout << "---[Output]------------------" << std::endl;
-        std::cout << translator->Output() << std::endl;
+        std::cout << output_computed << std::endl;
         std::cout << "---[Expected]----------------" << std::endl;
-        std::cout << output_string << std::endl;
+        std::cout << output_expected << std::endl;
         std::cout << "---------------------" << std::endl;
       }
     }
diff --git a/src/main.cpp b/src/main.cpp
index 051e3b9..dc423b6 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -8,8 +8,7 @@ int main(int, const char**) {
   }
 
   auto sequence = SequenceTranslator();
-  sequence->Process(input);
-  std::cout << sequence->Output() << std::endl;
+  std::cout << (*sequence)(input, "") << std::endl;
 
   return 0;
 }
diff --git a/src/main_webassembly.cpp b/src/main_webassembly.cpp
index 584fc3d..3087fa4 100644
--- a/src/main_webassembly.cpp
+++ b/src/main_webassembly.cpp
@@ -17,12 +17,10 @@ void replaceAll(std::string& str,
 
 extern "C" {
 
-void translate(const char* translator_name, const char* input) {
+void translate(const char* translator_name, const char* input, const char* options) {
   std::string translator_string = translator_name;
   auto translator = TranslatorFromName(translator_name);
-
-  translator->Process(input);
-  std::string command = translator->Output();
+  std::string command = (*translator)(input, options);
   replaceAll(command, "\n", "\\n");
   replaceAll(command, "\"", "\\\"");
   command = "output.value=\"" + command + "\";";
diff --git a/src/screen/Screen.cpp b/src/screen/Screen.cpp
index 455401b..eed8f91 100644
--- a/src/screen/Screen.cpp
+++ b/src/screen/Screen.cpp
@@ -56,31 +56,57 @@ std::string Screen::ToString() {
   return ss.str();
 }
 
-void Screen::DrawHorizontalLine(int left, int right, int y) {
+void Screen::DrawHorizontalLine(int left, int right, int y, wchar_t c) {
   for (int x = left; x <= right; ++x) {
-    lines_[y][x] = U'─';
+    lines_[y][x] = c;
   }
 }
 
-void Screen::DrawVerticalLine(int top, int bottom, int x) {
+void Screen::DrawVerticalLine(int top, int bottom, int x, wchar_t c) {
   for (int y = top; y <= bottom; ++y) {
     lines_[y][x] = U'│';
   }
 }
 
-void Screen::ASCIIfy() {
-  for(auto& line : lines_) {
-    for(auto& c : line) {
-      switch(c) {
-        case U'─': c = '-'; break;
-        case U'│': c = '|'; break;
-        case U'┐': c = '.'; break;
-        case U'┘': c = '`'; break;
-        case U'┌': c = '.'; break;
-        case U'└': c = '\''; break;
-        case U'┬': c = '-'; break;
-        case U'┴': c = '-'; break;
+void Screen::ASCIIfy(int style) {
+
+  if (style == 0) {
+    for(auto& line : lines_) {
+      for(auto& c : line) {
+        switch(c) {
+          case U'─': c = '-'; break;
+          case U'│': c = '|'; break;
+          case U'┐': c = '.'; break;
+          case U'┘': c = '\''; break;
+          case U'┌': c = '.'; break;
+          case U'└': c = '\''; break;
+          case U'┬': c = '-'; break;
+          case U'┴': c = '-'; break;
+          case U'△': c = '^'; break;
+          case U'▽': c = 'V'; break;
+        }
       }
     }
+    return;
+  }
+
+  if (style == 1) {
+    for(auto& line : lines_) {
+      for(auto& c : line) {
+        switch(c) {
+          case U'─': c = '-'; break;
+          case U'│': c = '|'; break;
+          case U'┐': c = '.'; break;
+          case U'┘': c = '\''; break;
+          case U'┌': c = '.'; break;
+          case U'└': c = '\''; break;
+          case U'┬': c = '.'; break;
+          case U'┴': c = '\''; break;
+          case U'△': c = '^'; break;
+          case U'▽': c = 'V'; break;
+        }
+      }
+    }
+    return;
   }
 }
diff --git a/src/screen/Screen.h b/src/screen/Screen.h
index df60a95..31939f2 100644
--- a/src/screen/Screen.h
+++ b/src/screen/Screen.h
@@ -14,9 +14,9 @@ class Screen {
   void DrawText(int x, int y, const std::wstring& text);
   void DrawBox(int x, int y, int w, int h);
   void DrawBoxedText(int x, int y, const std::wstring& text);
-  void DrawHorizontalLine(int left, int right, int y);
-  void DrawVerticalLine(int top, int bottom, int x);
-  void ASCIIfy();
+  void DrawHorizontalLine(int left, int right, int y, wchar_t c = U'─');
+  void DrawVerticalLine(int top, int bottom, int x, wchar_t c = U'│');
+  void ASCIIfy(int style = 0);
   std::string ToString();
 
  private:
diff --git a/src/style.css b/src/style.css
index 1739e3a..9b5c8aa 100644
--- a/src/style.css
+++ b/src/style.css
@@ -116,7 +116,7 @@ textarea {
   border:1px solid gray;
 }
 
-#menu_bar_submenu {
+.menu_bar_submenu {
   padding:12px;
   display:inline-block;
   border-right: 1px solid gray;
@@ -126,3 +126,10 @@ select {
   font:inherit;
   size:50px;
 }
+
+.option {
+  margin:0px;
+  padding:0px;
+  padding-right:3px;
+  padding-left:3px;
+}
diff --git a/src/tools.json b/src/tools.json
index 02feb24..8f75975 100644
--- a/src/tools.json
+++ b/src/tools.json
@@ -2,6 +2,14 @@
   {
     "tool": "Sequence",
     "description": "Sequence diagram",
+    "options": [
+      {
+        "type":"checkbox",
+        "default":false,
+        "label":"ASCII-only",
+        "name":"ascii_only"
+      }
+    ],
     "examples": [
       {
         "title": "------------------------",
@@ -62,6 +70,14 @@
   {
     "tool": "PlanarGraph",
     "description": "Planar graph",
+    "options": [
+      {
+        "type":"checkbox",
+        "default":false,
+        "label":"ASCII-only",
+        "name":"ascii_only"
+      }
+    ],
     "examples": [
       {
         "title": "------------------------",
@@ -180,8 +196,22 @@
     ]
   },
   {
-    "tool": "LineNumberUnicode",
-    "description": "Line number unicode",
+    "tool": "Frame",
+    "description": "Frame/border/line_number",
+    "options": [
+      {
+        "type":"checkbox",
+        "default":true,
+        "label":"Line number",
+        "name":"line_number"
+      },
+      {
+        "type":"checkbox",
+        "default":false,
+        "label":"ASCII-only",
+        "name":"ascii_only"
+      }
+    ],
     "examples": [
       {
         "title": "------------------------",
@@ -201,28 +231,5 @@
         ]
       }
     ]
-  },
-  {
-    "tool": "LineNumberASCII",
-    "description": "Line number ASCII",
-    "examples": [
-      {
-        "title": "------------------------",
-        "empty": true
-      },
-      {
-        "title":"Hello world",
-        "content": [
-          "#include <iostream>",
-          "using namespace std;",
-          "",
-          "int main() ",
-          "{",
-            "    cout << \"Hello, World!\";",
-            "    return 0;",
-            "}"
-        ]
-      }
-    ]
   }
 ]
diff --git a/src/translator/Translator.cpp b/src/translator/Translator.cpp
index 04dcc43..1149ada 100644
--- a/src/translator/Translator.cpp
+++ b/src/translator/Translator.cpp
@@ -1,13 +1,26 @@
 #include "translator/Translator.h"
 
+#include <sstream>
+#include <string>
+
 std::unique_ptr<Translator> TranslatorFromName(const std::string name) {
   if (name == "Sequence")
     return SequenceTranslator();
-  if (name == "LineNumberASCII")
-    return LineNumberASCIITranslator();
-  if (name == "LineNumberUnicode")
-    return LineNumberUnicodeTranslator();
+  if (name == "Frame")
+    return FrameTranslator();
   if (name == "PlanarGraph")
     return PlanarGraphTranslator();
   return nullptr;
 }
+
+// static
+std::map<std::string, std::string> Translator::SerializeOption(
+    const std::string& options) {
+  std::map<std::string, std::string> m;
+  std::stringstream ss(options);
+  std::string label, value;
+  while (std::getline(ss, label) && std::getline(ss, value)) {
+    m[label] = value;
+  }
+  return m;
+}
diff --git a/src/translator/Translator.h b/src/translator/Translator.h
index 24b403b..17706fb 100644
--- a/src/translator/Translator.h
+++ b/src/translator/Translator.h
@@ -1,21 +1,22 @@
 #ifndef TRANSLATOR_TRANSLATOR
 #define TRANSLATOR_TRANSLATOR
 
-#include <string>
+#include <map>
 #include <memory>
+#include <string>
 
 class Translator {
  public:
   virtual ~Translator() = default;
-  virtual void Process(const std::string& input) = 0;
-  virtual std::string Output() = 0;
+  virtual std::string operator()(const std::string& input,
+                                 const std::string& options) = 0;
+  static std::map<std::string, std::string> SerializeOption(
+      const std::string& options);
 };
 
 std::unique_ptr<Translator> SequenceTranslator();
-std::unique_ptr<Translator> LineNumberASCIITranslator();
-std::unique_ptr<Translator> LineNumberUnicodeTranslator();
+std::unique_ptr<Translator> FrameTranslator();
 std::unique_ptr<Translator> PlanarGraphTranslator();
-
 std::unique_ptr<Translator> TranslatorFromName(const std::string name);
 
 #endif /* end of include guard: TRANSLATOR_TRANSLATOR */
diff --git a/src/translator/frame/CMakeLists.txt b/src/translator/frame/CMakeLists.txt
new file mode 100644
index 0000000..2744627
--- /dev/null
+++ b/src/translator/frame/CMakeLists.txt
@@ -0,0 +1,3 @@
+add_library(translator_frame STATIC
+  Frame.cpp
+)
diff --git a/src/translator/frame/Frame.cpp b/src/translator/frame/Frame.cpp
new file mode 100644
index 0000000..cb53019
--- /dev/null
+++ b/src/translator/frame/Frame.cpp
@@ -0,0 +1,95 @@
+#include <sstream>
+#include <vector>
+
+#include "screen/Screen.h"
+#include "translator/Translator.h"
+
+class Frame : public Translator {
+ public:
+  virtual ~Frame() = default;
+  virtual std::string operator()(const std::string& input,
+                                 const std::string& options_string) {
+    auto options = SerializeOption(options_string);
+
+    bool ascii_only = false;
+    if (options.count("ascii_only") && options.at("ascii_only") == "true")
+      ascii_only = true;
+
+    bool line_number = true;
+    if (options.count("line_number") && options.at("line_number") == "false")
+      line_number = false;
+
+    // cut by lines.
+    std::stringstream ss(input);
+    std::vector<std::wstring> lines;
+    std::string line;
+    while (std::getline(ss, line)) {
+      lines.push_back(to_wstring(line));
+    }
+
+    int number_length = 0;
+    int max_number = 1;
+    while (max_number <= (int)lines.size()) {
+      max_number *= 10;
+      number_length++;
+    }
+
+    int text_max_width = 0;
+    for (const auto& line : lines) {
+      text_max_width = std::max(text_max_width, (int)line.size());
+    }
+
+    int width, height, text_x;
+    if (line_number) {
+      width = number_length + text_max_width + 3;
+      height = lines.size() + 2 + ascii_only;
+      text_x = number_length + 2;
+    } else {
+      width = text_max_width + 2;
+      height = lines.size() + 2 + ascii_only;
+      text_x = 1;
+    }
+    int text_y = ascii_only ? 2 : 1;
+
+    Screen screen(width, height);
+
+    // Draw text.
+    for (int y = 0; y < lines.size(); ++y) {
+      screen.DrawText(text_x, text_y + y, lines[y]);
+    }
+
+    // Draw line number.
+    if (line_number) {
+      for (int y = 0; y < lines.size(); ++y) {
+        screen.DrawText(1, text_y + y, to_wstring(std::to_string(y + 1)));
+      }
+    }
+
+    // Draw box.
+    if (ascii_only) {
+      screen.DrawHorizontalLine(1, width - 2, 0, U'_');
+      screen.DrawHorizontalLine(1, width - 2, height - 1, U'_');
+      screen.DrawVerticalLine(1, height - 1, 0);
+      screen.DrawVerticalLine(1, height - 1, width - 1);
+    } else {
+      screen.DrawBox(0, 0, width, height);
+    }
+
+    // Draw the line number separator.
+    if (line_number) {
+      if (ascii_only) {
+        screen.DrawVerticalLine(1, height - 1, number_length + 1, U'|');
+      } else {
+        screen.DrawPixel(number_length + 1, 0, U'┬');
+        screen.DrawVerticalLine(1, height - 1, number_length + 1);
+        screen.DrawPixel(number_length + 1, height - 1, U'┴');
+      }
+    }
+
+    return screen.ToString();
+  }
+};
+
+std::unique_ptr<Translator> FrameTranslator() {
+  return std::make_unique<Frame>();
+}
diff --git a/src/translator/line_number_ascii/CMakeLists.txt b/src/translator/line_number_ascii/CMakeLists.txt
deleted file mode 100644
index 4b2ffe7..0000000
--- a/src/translator/line_number_ascii/CMakeLists.txt
+++ /dev/null
@@ -1,3 +0,0 @@
-add_library(translator_line_number_ascii STATIC
-  LineNumberASCII.cpp
-)
diff --git a/src/translator/line_number_ascii/LineNumberASCII.cpp b/src/translator/line_number_ascii/LineNumberASCII.cpp
deleted file mode 100644
index bb9b192..0000000
--- a/src/translator/line_number_ascii/LineNumberASCII.cpp
+++ /dev/null
@@ -1,61 +0,0 @@
-#include <sstream>
-#include <vector>
-
-#include "screen/Screen.h"
-#include "translator/Translator.h"
-
-class LineNumberASCII : public Translator {
- public:
-  virtual ~LineNumberASCII() = default;
-  virtual void Process(const std::string& input) {
-
-    // cut by lines.
-    std::stringstream ss(input);
-    std::vector<std::wstring> lines;
-    std::string line;
-    while (std::getline(ss, line)) {
-      lines.push_back(to_wstring(line));
-    }
-
-    int number_length = 0;
-    int max_number = 1;
-    while (max_number <= (int)lines.size()) {
-      max_number *= 10;
-      number_length++;
-    }
-
-    int text_max_width = 0;
-    for (const auto& line : lines) {
-      text_max_width = std::max(text_max_width, (int)line.size());
-    }
-
-    int width = number_length + text_max_width + 3;
-    int height = lines.size() + 3;
-    Screen screen(width, height);
-
-    int y = 2;
-    for (const auto& line : lines) {
-      screen.DrawText(number_length + 2, y, line);
-      screen.DrawText(1, y, to_wstring(std::to_string(y-1)));
-      ++y;
-    }
-
-    screen.DrawText(1, 0, std::wstring(width - 2, '_'));
-    screen.DrawText(1, height - 1, std::wstring(width - 2, '_'));
-    std::wstring vertical_bar = to_wstring("|");
-    for (int y = 1; y < height; ++y) {
-      screen.DrawText(0, y, vertical_bar);
-      screen.DrawText(number_length + 1, y, vertical_bar);
-      screen.DrawText(width - 1, y, vertical_bar);
-    }
-    output_ = screen.ToString();
-  }
-  virtual std::string Output() { return output_; }
-
- private:
-  std::string output_;
-};
-
-std::unique_ptr<Translator> LineNumberASCIITranslator() {
-  return std::make_unique<LineNumberASCII>();
-}
diff --git a/src/translator/line_number_unicode/CMakeLists.txt b/src/translator/line_number_unicode/CMakeLists.txt
deleted file mode 100644
index 640fe38..0000000
--- a/src/translator/line_number_unicode/CMakeLists.txt
+++ /dev/null
@@ -1,3 +0,0 @@
-add_library(translator_line_number_unicode STATIC
-  LineNumberUnicode.cpp
-)
diff --git a/src/translator/line_number_unicode/LineNumberUnicode.cpp b/src/translator/line_number_unicode/LineNumberUnicode.cpp
deleted file mode 100644
index aa02c5a..0000000
--- a/src/translator/line_number_unicode/LineNumberUnicode.cpp
+++ /dev/null
@@ -1,57 +0,0 @@
-#include <sstream>
-#include <vector>
-
-#include "screen/Screen.h"
-#include "translator/Translator.h"
-
-class LinNumberUnicode : public Translator {
- public:
-  virtual ~LinNumberUnicode() = default;
-  virtual void Process(const std::string& input) {
-    // cut by lines.
-    std::stringstream ss(input);
-    std::vector<std::wstring> lines;
-    std::string line;
-    while (std::getline(ss, line)) {
-      lines.push_back(to_wstring(line));
-    }
-
-    int number_length = 0;
-    int max_number = 1;
-    while (max_number <= (int)lines.size()) {
-      max_number *= 10;
-      number_length++;
-    }
-
-    int text_max_width = 0;
-    for (const auto& line : lines) {
-      text_max_width = std::max(text_max_width, (int)line.size());
-    }
-
-    int width = number_length + text_max_width + 3;
-    int height = lines.size() + 2;
-    Screen screen(width, height);
-
-    int y = 1;
-    for (const auto& line : lines) {
-      screen.DrawText(number_length + 2, y, line);
-      screen.DrawText(1, y, to_wstring(std::to_string(y)));
-      ++y;
-    }
-
-    screen.DrawBox(0, 0, width, height);
-    screen.DrawVerticalLine(1, height - 2, number_length + 1);
-    screen.DrawPixel(number_length + 1, 0, U'┬');
-    screen.DrawPixel(number_length + 1, height - 1, U'┴');
-
-    output_ = screen.ToString();
-  }
-  virtual std::string Output() { return output_; }
-
- private:
-  std::string output_;
-};
-
-std::unique_ptr<Translator> LineNumberUnicodeTranslator() {
-  return std::make_unique<LinNumberUnicode>();
-}
diff --git a/src/translator/planar_graph/PlanarGraph.cpp b/src/translator/planar_graph/PlanarGraph.cpp
index 972d21e..7f74bd5 100644
--- a/src/translator/planar_graph/PlanarGraph.cpp
+++ b/src/translator/planar_graph/PlanarGraph.cpp
@@ -78,9 +78,14 @@ struct PlanarGraph::DrawnVertex {
   std::vector<DrawnEdge> edges;
 };
 
-void PlanarGraph::Process(const std::string& input) {
+std::string PlanarGraph::operator()(const std::string& input,
+                                    const std::string& options_string) {
+  auto options = SerializeOption(options_string);
+  ascii_only_ = (options["ascii_only"] == "true");
+  
   Read(input);
   Write();
+  return output_;
 }
 
 void PlanarGraph::Read(const std::string& input) {
@@ -313,6 +318,9 @@ void PlanarGraph::Write() {
         edge.Draw(screen, *this);
       }
     }
+
+    if (ascii_only_)
+      screen.ASCIIfy(1);
     output_ += screen.ToString();
   };
 
@@ -379,5 +387,5 @@ void PlanarGraph::Write() {
     }
   }
 
-  Draw();
+  return Draw();
 }
diff --git a/src/translator/planar_graph/PlanarGraph.h b/src/translator/planar_graph/PlanarGraph.h
index 007c008..51e2a59 100644
--- a/src/translator/planar_graph/PlanarGraph.h
+++ b/src/translator/planar_graph/PlanarGraph.h
@@ -20,11 +20,12 @@ struct Box {
 class PlanarGraph : public Translator {
  public:
   virtual ~PlanarGraph() = default;
-  void Process(const std::string& input) override;
-  std::string Output() override { return output_; }
+  std::string operator()(const std::string& input,
+                         const std::string& options) override;
 
   //----------------------------------------------------------------------------
  private:
+  bool ascii_only_;
   std::string output_;
 
   std::map<std::wstring, int> name_to_id;
diff --git a/src/translator/sequence/Sequence.cpp b/src/translator/sequence/Sequence.cpp
index c06377f..9cc4d2f 100644
--- a/src/translator/sequence/Sequence.cpp
+++ b/src/translator/sequence/Sequence.cpp
@@ -21,11 +21,15 @@ bool Sequence::Dependency::operator<(const Sequence::Dependency& other) const {
   return to < other.to;
 }
 
-void Sequence::Process(const std::string& input) {
+std::string Sequence::operator()(const std::string& input,
+                                 const std::string& options_string) {
+  auto options = SerializeOption(options_string);
+  ascii_only_ = (options["ascii_only"] == "true");
+
   ComputeInternalRepresentation(input);
   UniformizeInternalRepresentation();
   Layout();
-  Draw();
+  return Draw();
 }
 
 void Sequence::ComputeInternalRepresentation(const std::string& input) {
@@ -690,7 +694,7 @@ void Sequence::Message::Draw(Screen& screen) {
   }
 }
 
-void Sequence::Draw() {
+std::string Sequence::Draw() {
   // Estimate output dimension.
   int width = actors.back().right;
   int height = 0;
@@ -710,43 +714,7 @@ void Sequence::Draw() {
     message.Draw(screen);
   }
 
-  output_ = screen.ToString();
-
-  //std::wstringstream ss;
-  //for (auto& actor : actors) {
-    //ss << "Actor " << actor.name << '\n';
-    //for (auto& dependency : actor.dependencies) {
-      //ss << " * " << dependency.from << "<" << dependency.to << '\n';
-    //}
-    //ss << " - left = " << actor.left << '\n';
-    //ss << " - center = " << actor.center << '\n';
-    //ss << " - right = " << actor.right << '\n';
-    //ss << '\n';
-  //}
-
-  //for (auto& message : messages) {
-    //ss << "Message " << '\n';
-    //ss << "  From " << message.from << '\n';
-    //ss << "  To   " << message.to << '\n';
-    //ss << "  Id   " << message.id << '\n';
-    //for (auto& i : message.messages) {
-      //ss << "    " << i << '\n';
-    //}
-    //ss << '\n';
-  //}
-
-  //for (auto& it : message_index) {
-    //ss << "(" << it.first << "," << it.second << ")\n";
-  //}
-  //for (auto& it : actor_index) {
-    //ss << "(" << it.first << "," << it.second << ")\n";
-  //}
-
-  //ss << " width = " << width << " height = " << height << "\n";
-
-  //output_ += '\n' + to_string(ss.str());
-}
-
-std::string Sequence::Output() {
-  return output_;
+  if (ascii_only_)
+    screen.ASCIIfy(0);
+  return screen.ToString();
 }
diff --git a/src/translator/sequence/Sequence.h b/src/translator/sequence/Sequence.h
index 1627e54..0a1b060 100644
--- a/src/translator/sequence/Sequence.h
+++ b/src/translator/sequence/Sequence.h
@@ -14,8 +14,8 @@ class Screen;
 class Sequence : public Translator {
  public:
   virtual ~Sequence() = default;
-  void Process(const std::string& input) override;
-  std::string Output() override;
+  std::string operator()(const std::string& input,
+                         const std::string& options) override;
 
  public: // Not really public.
   struct Dependency {
@@ -66,6 +66,8 @@ class Sequence : public Translator {
   std::map<std::wstring, int> actor_index;
   std::map<int, int> message_index;
 
+  bool ascii_only_;
+
   // 1) Parse.
   void ComputeInternalRepresentation(const std::string& input);
   void AddCommand(SequenceParser::CommandContext* command);
@@ -87,7 +89,7 @@ class Sequence : public Translator {
   void LayoutComputeMessagesPositions();
 
   // 4)
-  void Draw();
+  std::string Draw();
   std::string output_;
 };
 
diff --git a/test/LineNumberUnicode/empty/input b/test/Frame/empty/input
similarity index 100%
rename from test/LineNumberUnicode/empty/input
rename to test/Frame/empty/input
diff --git a/test/LineNumberUnicode/empty/output b/test/Frame/empty/output
similarity index 100%
rename from test/LineNumberUnicode/empty/output
rename to test/Frame/empty/output
diff --git a/test/LineNumberUnicode/hello-world/input b/test/Frame/hello-world/input
similarity index 100%
rename from test/LineNumberUnicode/hello-world/input
rename to test/Frame/hello-world/input
diff --git a/test/LineNumberUnicode/hello-world/output b/test/Frame/hello-world/output
similarity index 100%
rename from test/LineNumberUnicode/hello-world/output
rename to test/Frame/hello-world/output