Update 4 1 horizontal scalar field

4-1-horizontal-scalar-field.md

@@ -18,7 +18,7 @@ _Rendering Pane_ will immediately display the distribution, and a new layer will
 
 ##### 3. Change the settings for color mapping (if necessary).
 
-Double click the vertical color mapping bar on the right-hand side of _Rendering Pane_. A popup dialog named _'Setup Colormap and Limit Range'_ will show up, where you can change various options regarding the color mapping.
+Double click the vertical _Color Bar_ on the right-hand side of _Rendering Pane_. A popup dialog named _'Setup Colormap and Limit Range'_ will show up, where you can change various options regarding the color mapping.
 
 ##### 4. Change the visualization settings - contour vs. raster (if necessary).