Update 4 1 horizontal scalar field

4-1-horizontal-scalar-field.md

@@ -33,7 +33,7 @@ On _Horizontal Plane_ menu category of _Menu Bar_, you can select one of the fol
 * Raster : show distribution with smoothly filled colors
 * Dot : show distribution with colored dots for grid points
 
-Each menu button has drop-down submenu, where you can set various options for each visualization style. For example, you can display character labels (including "H"/"L" for geopotential height) for the peak locations of the distribution.
+Each menu button has drop-down submenu, where you can set various options for each visualization style. For example, you can display character labels (including "H"/"L" for geopotential height) at the peak locations of the distribution.
 
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