4-2-vertical-scalar-field.md

@@ -14,7 +14,7 @@ Open your data file(s), using _Open Data_ buttons on the _Home_ menu category of
 In order to visualize the distribution of the variable on a vertical cross-section, your dataset should include multiple datasets of the same variable at different altitudes. If you indeed have multiple datasets, you can either
 
 * click the _Add Vertical Cross-section_ button on _Layer_ menu category, select options, and then click "OK", or 
-* right-click the temperature variable on the _Variables Pane_, and select _Add Vertical Cross-section'.
+* right-click the temperature variable on the _Variables Pane_, and select _Add Vertical Cross-section'_.
 
 _Rendering Pane_ will immediately display the distribution, and a new layer will be added to the _Layers Pane_.