docs: function() {
  
        var data = window.kelmu.data[id];
        var elemData = data.definitions['step' + data.stepNumber][data.subStepNumber][data.selectedElementNumber];
  
        editor.find('.kelmu-editor-pane').remove();
  
        var soundEditor = $('<div></div>').addClass('kelmu-sound-editor').addClass('kelmu-editor-pane');
        soundEditor.appendTo(editor);
  
        soundEditor.append($('<h4>Sound</h4>').css('margin', '15px 0px'));
  
        idCounter += 1;
  
        // Set the current values
        addComponent('URL:', soundEditor, 'kelmu-sound-url', elemData.sound, 'text', true);
  
        // Move cursor to end
        soundEditor.find('.kelmu-sound-url').focus();
        var val = soundEditor.find('.kelmu-sound-url').val();
        soundEditor.find('.kelmu-sound-url').val('').val(val);
  
        var buttonContainer = $('<div></div>').appendTo(soundEditor);
  
        // Save the modified properties
        var saveButton = function() {
          elemData.sound = soundEditor.find('.kelmu-sound-url').val();
          window.kelmu.data[id].actions.update();
          updateView(true, true);
          notifyModifications();
        };
  
        soundEditor.find('input').keyup(saveButton);
  
        createRemoveButton().click(function(e) {
          e.preventDefault();
  
          var soundControl = container.find('.kelmu-sound-control');
          soundControl.hide();
  
          // If there are sounds for this animation, show the mute control
          Object.keys(window.kelmu.data[id].definitions || {}).forEach(function(substeps) {
            window.kelmu.data[id].definitions[substeps].forEach(function(substep) {
              substep.forEach(function(step) {
                if (step.sound !== undefined) {
                  soundControl.show();
                }
              });
            });
          });
  
        }).appendTo(buttonContainer);
  
        // Play the sound
        $('<button></button>').text('Play').addClass('btn').appendTo(buttonContainer).click(function(e) {
          e.preventDefault();
          var sound = $('<audio></audio>').attr('src', soundEditor.find('.kelmu-sound-url').val());
          container.append(sound);
          sound[0].play();
        });
  
      }