You can change the size and distribution of marker fill symbols for a selected feature. This is another representation override.

To do so, add the Representation toolbar and the Editor toolbar if they are not already present. Make the layer you want to edit (in this example, WetlandsA_Rep) the only selectable layer, and start editing.

Next, using the Select tool on the Representation toolbar, select the feature (in this example it is a swamp polygon). A rectangular selection box appears around it.

Open the Representation Properties dialog box to examine the selected feature. You can now create an override of the marker fill pattern of the swamp.

Click the Tools tab on the Representation Properties dialog box.

Click the Resize tool on the Representation toolbar.

For the swamp feature representation, you will see that the parameters for Size, X step, and Y step are selected by default. Leave these as they are.

The X step and Y step properties determine the pattern of the marker symbols as they appear within a polygon, whereas the Size property determines the size of the marker symbol. The Geometry property determines whether the shape of the feature is adjusted. Keep in mind that changes to the underlying geometry of the feature will only occur if your representations were created with that option. Otherwise, changes to the shape will be stored in the Override field.

Make sure the Geometry option is unchecked, so you will only resize the markers and not the polygon.

Click and drag the Resize tool anywhere near (or on) the swamp. As you drag the mouse pointer, you will see a line to guide your change and see the swamp symbol dynamically change. When you are satisfied with the changes you have made, release the mouse button.

The pattern of swamp symbols will become more or less dense, depending on the direction you dragged. The density is based on the X step and Y step parameter values. The size of the swamp symbol will be different after you have finished dragging the Resize tool. The Size parameter value is the basis for the size of a symbol.

Click the Drawing tab on the Representation Properties dialog box to see the overrides that you’ve just created. Note that the X step and Y step parameters have the paintbrush icon adjacent to them, indicating an override.

Save your edits, then stop editing.