diff --git a/.gitignore b/.gitignore
index fd01e40db43..6ca09da1884 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,5 +1,7 @@
 _build/
 env/
 extensions/__pycache__/
+__pycache__
+*.pyc
 *~
 .directory
diff --git a/conf.py b/conf.py
index d226e001166..8c19966c4ea 100644
--- a/conf.py
+++ b/conf.py
@@ -11,7 +11,7 @@
 
 # Sphinx extension module names and templates location
 sys.path.append(os.path.abspath('extensions'))
-extensions = ['gdscript']
+extensions = ['gdscript', 'sphinx_tabs.tabs']
 templates_path = ['_templates']
 
 # You can specify multiple suffix as a list of string: ['.rst', '.md']
diff --git a/extensions/gdscript.py b/extensions/gdscript.py
index 179aa38a071..2c1a96f02f0 100644
--- a/extensions/gdscript.py
+++ b/extensions/gdscript.py
@@ -162,3 +162,6 @@ def innerstring_rules(ttype):
             (r'\n', String.Single)
         ],
     }
+
+def setup(sphinx):
+    sphinx.add_lexer('gdscript', GDScriptLexer())
diff --git a/extensions/sphinx_tabs/__init__.py b/extensions/sphinx_tabs/__init__.py
new file mode 100644
index 00000000000..de40ea7ca05
--- /dev/null
+++ b/extensions/sphinx_tabs/__init__.py
@@ -0,0 +1 @@
+__import__('pkg_resources').declare_namespace(__name__)
diff --git a/extensions/sphinx_tabs/semantic-ui-2.2.10/LICENSE.md b/extensions/sphinx_tabs/semantic-ui-2.2.10/LICENSE.md
new file mode 100644
index 00000000000..62df7662bf4
--- /dev/null
+++ b/extensions/sphinx_tabs/semantic-ui-2.2.10/LICENSE.md
@@ -0,0 +1,7 @@
+# The MIT License
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the 'Software'), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
diff --git a/extensions/sphinx_tabs/semantic-ui-2.2.10/menu.min.css b/extensions/sphinx_tabs/semantic-ui-2.2.10/menu.min.css
new file mode 100755
index 00000000000..69790d517dc
--- /dev/null
+++ b/extensions/sphinx_tabs/semantic-ui-2.2.10/menu.min.css
@@ -0,0 +1 @@
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\ No newline at end of file
diff --git a/extensions/sphinx_tabs/semantic-ui-2.2.10/segment.min.css b/extensions/sphinx_tabs/semantic-ui-2.2.10/segment.min.css
new file mode 100755
index 00000000000..7511cb399f4
--- /dev/null
+++ b/extensions/sphinx_tabs/semantic-ui-2.2.10/segment.min.css
@@ -0,0 +1,9 @@
+/*!
+ * # Semantic UI 2.2.10 - Segment
+ * http://github.com/semantic-org/semantic-ui/
+ *
+ *
+ * Released under the MIT license
+ * http://opensource.org/licenses/MIT
+ *
+ */.ui.segment{position:relative;background:#FFF;box-shadow:0 1px 2px 0 rgba(34,36,38,.15);margin:1rem 0;padding:1em;border-radius:.28571429rem;border:1px solid rgba(34,36,38,.15)}.ui.segment:first-child{margin-top:0}.ui.segment:last-child{margin-bottom:0}.ui.vertical.segment{margin:0;padding-left:0;padding-right:0;background:none;border-radius:0;box-shadow:none;border:none;border-bottom:1px solid rgba(34,36,38,.15)}.ui.vertical.segment:last-child{border-bottom:none}.ui.inverted.segment>.ui.header{color:#FFF}.ui[class*="bottom attached"].segment>[class*="top attached"].label{border-top-left-radius:0;border-top-right-radius:0}.ui[class*="top attached"].segment>[class*="bottom attached"].label{border-bottom-left-radius:0;border-bottom-right-radius:0}.ui.attached.segment:not(.top):not(.bottom)>[class*="top attached"].label{border-top-left-radius:0;border-top-right-radius:0}.ui.attached.segment:not(.top):not(.bottom)>[class*="bottom 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diff --git a/extensions/sphinx_tabs/semantic-ui-2.2.10/tab.min.css b/extensions/sphinx_tabs/semantic-ui-2.2.10/tab.min.css
new file mode 100755
index 00000000000..1a7da762cd3
--- /dev/null
+++ b/extensions/sphinx_tabs/semantic-ui-2.2.10/tab.min.css
@@ -0,0 +1,9 @@
+/*!
+ * # Semantic UI 2.2.10 - Tab
+ * http://github.com/semantic-org/semantic-ui/
+ *
+ *
+ * Released under the MIT license
+ * http://opensource.org/licenses/MIT
+ *
+ */.ui.tab{display:none}.ui.tab.active,.ui.tab.open{display:block}.ui.tab.loading{position:relative;overflow:hidden;display:block;min-height:250px}.ui.tab.loading *{position:relative!important;left:-10000px!important}.ui.tab.loading.segment:before,.ui.tab.loading:before{position:absolute;content:'';top:100px;left:50%;margin:-1.25em 0 0 -1.25em;width:2.5em;height:2.5em;border-radius:500rem;border:.2em solid rgba(0,0,0,.1)}.ui.tab.loading.segment:after,.ui.tab.loading:after{position:absolute;content:'';top:100px;left:50%;margin:-1.25em 0 0 -1.25em;width:2.5em;height:2.5em;-webkit-animation:button-spin .6s linear;animation:button-spin .6s linear;-webkit-animation-iteration-count:infinite;animation-iteration-count:infinite;border-radius:500rem;border-color:#767676 transparent transparent;border-style:solid;border-width:.2em;box-shadow:0 0 0 1px transparent}
\ No newline at end of file
diff --git a/extensions/sphinx_tabs/semantic-ui-2.2.10/tab.min.js b/extensions/sphinx_tabs/semantic-ui-2.2.10/tab.min.js
new file mode 100644
index 00000000000..e67189f71fc
--- /dev/null
+++ b/extensions/sphinx_tabs/semantic-ui-2.2.10/tab.min.js
@@ -0,0 +1,10 @@
+/*!
+ * # Semantic UI 2.2.10 - Tab
+ * http://github.com/semantic-org/semantic-ui/
+ *
+ *
+ * Released under the MIT license
+ * http://opensource.org/licenses/MIT
+ *
+ */
+!function(e,t,a,n){"use strict";t="undefined"!=typeof t&&t.Math==Math?t:"undefined"!=typeof self&&self.Math==Math?self:Function("return this")(),e.fn.tab=function(i){var o,r=e(e.isFunction(this)?t:this),s=r.selector||"",c=(new Date).getTime(),l=[],d=arguments[0],u="string"==typeof d,b=[].slice.call(arguments,1),g=!1;return r.each(function(){var f,h,p,m,v,y,T=e.isPlainObject(i)?e.extend(!0,{},e.fn.tab.settings,i):e.extend({},e.fn.tab.settings),L=T.className,x=T.metadata,A=T.selector,P=T.error,C="."+T.namespace,F="module-"+T.namespace,S=e(this),j={},E=!0,O=0,w=this,k=S.data(F);v={initialize:function(){v.debug("Initializing tab menu item",S),v.fix.callbacks(),v.determineTabs(),v.debug("Determining tabs",T.context,h),T.auto&&v.set.auto(),v.bind.events(),T.history&&!g&&(v.initializeHistory(),g=!0),v.instantiate()},instantiate:function(){v.verbose("Storing instance of module",v),k=v,S.data(F,v)},destroy:function(){v.debug("Destroying 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\ No newline at end of file
diff --git a/extensions/sphinx_tabs/tabs.css b/extensions/sphinx_tabs/tabs.css
new file mode 100644
index 00000000000..1b372a139bc
--- /dev/null
+++ b/extensions/sphinx_tabs/tabs.css
@@ -0,0 +1,47 @@
+.sphinx-tabs {
+    margin-bottom: 2em;
+}
+
+.sphinx-tabs .sphinx-menu a.item {
+    color: #2980b9 !important;
+}
+
+.sphinx-tabs .sphinx-menu {
+    border-bottom-color: #a0b3bf !important;
+}
+
+.sphinx-tabs .sphinx-menu a.active.item {
+    border-color: #a0b3bf !important;
+}
+
+.sphinx-tab {
+    border-color: #a0b3bf !important;
+    box-sizing: border-box;
+}
+
+.tab div[class^='highlight']:last-child {
+    margin-bottom: 0;
+}
+
+.tab .wy-plain-list-disc:last-child,
+.rst-content .section ul:last-child,
+.rst-content .toctree-wrapper ul:last-child,
+article ul:last-child {
+    margin-bottom: 0;
+}
+
+/* Code tabs don't need the code-block border */
+.code-tab.tab {
+    padding: 0.4em !important;
+}
+
+.code-tab.tab div[class^='highlight'] {
+    border: none;
+}
+
+/* Semantic UI tabs don't shrink, make font smaller when viewing in mobile devices */
+@media screen and (max-width: 768px) {
+    .sphinx-tabs .sphinx-menu a.item {
+        font-size: 0.9em !important;
+    }
+}
\ No newline at end of file
diff --git a/extensions/sphinx_tabs/tabs.js b/extensions/sphinx_tabs/tabs.js
new file mode 100644
index 00000000000..b3f1973c555
--- /dev/null
+++ b/extensions/sphinx_tabs/tabs.js
@@ -0,0 +1,72 @@
+// From http://stackoverflow.com/questions/123999/how-to-tell-if-a-dom-element-is-visible-in-the-current-viewport
+function elementIsInView (el) {
+  if (typeof jQuery === "function" && el instanceof jQuery) {
+    el = el[0];
+  }
+
+  const  rect = el.getBoundingClientRect();
+
+  return (
+    rect.top >= 0 &&
+    rect.left >= 0 &&
+    rect.bottom <= (window.innerHeight || document.documentElement.clientHeight) &&
+    rect.right <= (window.innerWidth || document.documentElement.clientWidth)
+  );
+}
+
+$(function() {
+  // Change container tags <div> -> <a>
+  $('.sphinx-menu.menu .item').each(function() {
+    var this_ = $(this);
+    var a_this = $('<a>');
+
+    a_this.html(this_.html());
+    $.each(this_.prop('attributes'), function() {
+      a_this.attr(this.name, this.value);
+    });
+
+    this_.replaceWith(a_this);
+  });
+
+  // We store the data-tab values as sphinx-data-<data-tab value>
+  // Add data-tab attribute with the extracted value
+  $('.sphinx-menu.menu .item, .sphinx-tab.tab').each(function() {
+    var this_ = $(this);
+    const prefix = 'sphinx-data-';
+    const classes = this_.attr('class').split(/\s+/);
+    $.each(classes, function(idx, clazz) {
+      if (clazz.startsWith(prefix)) {
+        this_.attr('data-tab',
+                   clazz.substring(prefix.length));
+      }
+    });
+  });
+
+  // Mimic the Semantic UI behaviour
+  $('.sphinx-menu.menu .item').each(function() {
+    var this1 = $(this);
+    var data_tab = this1.attr('data-tab');
+
+    this1.on('click', function() {
+      // Find offset in view
+      const offset = (this1.offset().top - $(window).scrollTop());
+
+      $('[data-tab]').each(function() {
+        var this2 = $(this);
+        // Remove 'active' class from tabs that aren't the same
+        if (this2.attr('data-tab') !== data_tab) {
+          // Keep 'active' if there isn't a tab with the same data-tab value
+          if (0 < this2.parent().find('[data-tab="' + data_tab + '"]').length) {
+            this2.removeClass('active');
+          }
+        } else {
+          // Add 'active' if data-tab value is the same
+          this2.addClass('active');
+        }
+      });
+
+      // Keep tab with the original view offset
+      $(window).scrollTop(this1.offset().top - offset);
+    });
+  });
+});
\ No newline at end of file
diff --git a/extensions/sphinx_tabs/tabs.py b/extensions/sphinx_tabs/tabs.py
new file mode 100644
index 00000000000..f3d8ed9eaa0
--- /dev/null
+++ b/extensions/sphinx_tabs/tabs.py
@@ -0,0 +1,271 @@
+""" Tabbed views for Sphinx, with HTML builder """
+
+import base64
+import json
+import posixpath
+import os
+from docutils.parsers.rst import Directive
+from docutils import nodes
+from pygments.lexers import get_all_lexers
+from sphinx.util.osutil import copyfile
+
+DIR = os.path.dirname(os.path.abspath(__file__))
+
+
+FILES = [
+    'tabs.js',
+    'tabs.css',
+    'semantic-ui-2.2.10/segment.min.css',
+    'semantic-ui-2.2.10/menu.min.css',
+    'semantic-ui-2.2.10/tab.min.css',
+    'semantic-ui-2.2.10/tab.min.js',
+]
+
+
+LEXER_MAP = {}
+for lexer in get_all_lexers():
+    for short_name in lexer[1]:
+        LEXER_MAP[short_name] = lexer[0]
+
+
+class TabsDirective(Directive):
+    """ Top-level tabs directive """
+
+    has_content = True
+
+    def run(self):
+        """ Parse a tabs directive """
+        self.assert_has_content()
+        env = self.state.document.settings.env
+
+        node = nodes.container()
+        node['classes'] = ['sphinx-tabs']
+
+        tabs_node = nodes.container()
+        tabs_node.tagname = 'div'
+
+        classes = 'ui top attached tabular menu sphinx-menu'
+        tabs_node['classes'] = classes.split(' ')
+
+        env.temp_data['tab_titles'] = []
+        env.temp_data['is_first_tab'] = True
+        self.state.nested_parse(self.content, self.content_offset, node)
+
+        tab_titles = env.temp_data['tab_titles']
+        for idx, [data_tab, tab_name] in enumerate(tab_titles):
+            tab = nodes.container()
+            tab.tagname = 'a'
+            tab['classes'] = ['item'] if idx > 0 else ['active', 'item']
+            tab['classes'].append(data_tab)
+            tab += tab_name
+            tabs_node += tab
+
+        node.children.insert(0, tabs_node)
+
+        return [node]
+
+
+class TabDirective(Directive):
+    """ Tab directive, for adding a tab to a collection of tabs """
+
+    has_content = True
+
+    def run(self):
+        """ Parse a tab directive """
+        self.assert_has_content()
+        env = self.state.document.settings.env
+
+        args = self.content[0].strip()
+        try:
+            args = json.loads(args)
+            self.content.trim_start(1)
+        except ValueError:
+            args = {}
+
+        tab_name = nodes.container()
+        self.state.nested_parse(
+            self.content[:1], self.content_offset, tab_name)
+        args['tab_name'] = tab_name
+
+        if 'tab_id' not in args:
+            args['tab_id'] = env.new_serialno('tab_id')
+
+        data_tab = "sphinx-data-tab-{}".format(args['tab_id'])
+
+        env.temp_data['tab_titles'].append((data_tab, args['tab_name']))
+
+        text = '\n'.join(self.content)
+        node = nodes.container(text)
+
+        classes = 'ui bottom attached sphinx-tab tab segment'
+        node['classes'] = classes.split(' ')
+        node['classes'].extend(args.get('classes', []))
+        node['classes'].append(data_tab)
+
+        if env.temp_data['is_first_tab']:
+            node['classes'].append('active')
+            env.temp_data['is_first_tab'] = False
+
+        self.state.nested_parse(self.content[2:], self.content_offset, node)
+        return [node]
+
+
+class GroupTabDirective(Directive):
+    """ Tab directive that toggles with same tab names across page"""
+
+    has_content = True
+
+    def run(self):
+        """ Parse a tab directive """
+        self.assert_has_content()
+
+        group_name = self.content[0]
+        self.content.trim_start(2)
+
+        for idx, line in enumerate(self.content.data):
+            self.content.data[idx] = '   ' + line
+
+        tab_args = {
+            'tab_id': base64.b64encode(
+                group_name.encode('utf-8')).decode('utf-8')
+        }
+
+        new_content = [
+            '.. tab:: {}'.format(json.dumps(tab_args)),
+            '   {}'.format(group_name),
+            '',
+        ]
+
+        for idx, line in enumerate(new_content):
+            self.content.data.insert(idx, line)
+            self.content.items.insert(idx, (None, idx))
+
+        node = nodes.container()
+        self.state.nested_parse(self.content, self.content_offset, node)
+        return node.children
+
+
+class CodeTabDirective(Directive):
+    """ Tab directive with a codeblock as its content"""
+
+    has_content = True
+
+    def run(self):
+        """ Parse a tab directive """
+        self.assert_has_content()
+
+        args = self.content[0].strip().split()
+        self.content.trim_start(2)
+
+        lang = args[0]
+        tab_name = ' '.join(args[1:]) if len(args) > 1 else LEXER_MAP[lang]
+
+        for idx, line in enumerate(self.content.data):
+            self.content.data[idx] = '      ' + line
+
+        tab_args = {
+            'tab_id': '-'.join(tab_name.lower().split()),
+            'classes': ['code-tab'],
+        }
+
+        new_content = [
+            '.. tab:: {}'.format(json.dumps(tab_args)),
+            '   {}'.format(tab_name),
+            '',
+            '   .. code-block:: {}'.format(lang),
+            '',
+        ]
+
+        for idx, line in enumerate(new_content):
+            self.content.data.insert(idx, line)
+            self.content.items.insert(idx, (None, idx))
+
+        node = nodes.container()
+        self.state.nested_parse(self.content, self.content_offset, node)
+        return node.children
+
+
+class _FindTabsDirectiveVisitor(nodes.NodeVisitor):
+    """ Visitor pattern than looks for a sphinx tabs
+        directive in a document """
+    def __init__(self, document):
+        nodes.NodeVisitor.__init__(self, document)
+        self._found = False
+
+    def unknown_visit(self, node):
+        if not self._found and isinstance(node, nodes.container) and \
+           'classes' in node and isinstance(node['classes'], list):
+            self._found = 'sphinx-tabs' in node['classes']
+
+    @property
+    def found_tabs_directive(self):
+        """ Return whether a sphinx tabs directive was found """
+        return self._found
+
+
+# pylint: disable=unused-argument
+def add_assets(app, pagename, templatename, context, doctree):
+    """ Add CSS and JS asset files """
+    if doctree is None:
+        return
+    visitor = _FindTabsDirectiveVisitor(doctree)
+    doctree.walk(visitor)
+    assets = ['sphinx_tabs/' + f for f in FILES]
+    css_files = [posixpath.join('_static', path)
+                 for path in assets if path.endswith('css')]
+    script_files = [posixpath.join('_static', path)
+                    for path in assets if path.endswith('js')]
+    if visitor.found_tabs_directive:
+        if 'css_files' not in context:
+            context['css_files'] = css_files
+        else:
+            context['css_files'].extend(css_files)
+        if 'script_files' not in context:
+            context['script_files'] = script_files
+        else:
+            context['script_files'].extend(script_files)
+    else:
+        for path in css_files:
+            if 'css_files' in context and path in context['css_files']:
+                context['css_files'].remove(path)
+        for path in script_files:
+            if 'script_files' in context and path in context['script_files']:
+                context['script_files'].remove(path)
+# pylint: enable=unused-argument
+
+
+def copy_assets(app, exception):
+    """ Copy asset files to the output """
+    builders = ('html', 'readthedocs', 'readthedocssinglehtmllocalmedia',
+                'singlehtml')
+    if app.builder.name not in builders:
+        app.warn('Not copying tabs assets! Not compatible with %s builder' %
+                 app.builder.name)
+        return
+    if exception:
+        app.warn('Not copying tabs assets! Error occurred previously')
+        return
+    app.info('Copying tabs assets... ', nonl=True)
+
+    installdir = os.path.join(app.builder.outdir, '_static', 'sphinx_tabs')
+
+    for path in FILES:
+        source = os.path.join(DIR, path)
+        dest = os.path.join(installdir, path)
+
+        destdir = os.path.dirname(dest)
+        if not os.path.exists(destdir):
+            os.makedirs(destdir)
+
+        copyfile(source, dest)
+    app.info('done')
+
+
+def setup(app):
+    """ Set up the plugin """
+    app.add_directive('tabs', TabsDirective)
+    app.add_directive('tab', TabDirective)
+    app.add_directive('group-tab', GroupTabDirective)
+    app.add_directive('code-tab', CodeTabDirective)
+    app.connect('html-page-context', add_assets)
+    app.connect('build-finished', copy_assets)
diff --git a/learning/step_by_step/scripting.rst b/learning/step_by_step/scripting.rst
index 82eee9d3224..a1e1d2de9ab 100644
--- a/learning/step_by_step/scripting.rst
+++ b/learning/step_by_step/scripting.rst
@@ -185,11 +185,20 @@ where the script is attached, you can fetch the button as follows:
 
 Next, write a function which will be called when the button is pressed:
 
-::
+.. tabs::
+ .. code-tab:: gdscript GDScript
 
     func _on_button_pressed():  
         get_node("Label").set_text("HELLO!")
 
+ .. code-tab:: csharp
+
+   // i dont know how this is supposed to be in C#
+
+ .. group-tab:: VS
+
+    .. image:: /img/signals.png
+
 Finally, connect the button's "pressed" signal to that callback in _ready(), by
 using :ref:`Object.connect() <class_Object_connect>`.