Use the Format Gridlines dialog box to review or modify the appearance and intervals of gridlines in a view. You can:
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Change the line style, for example, solid or dashed, of selected gridlines in a view.
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Modify the line color of selected gridlines in a view.
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Specify gridline highlights at certain intervals, such as every fourth gridline.
Dialog box location
Display a view that uses gridlines, such as the Gantt Chart, Task Usage View, or Resource Sheet. On the Format menu, click Gridlines.
Details
Line to change box
Provides a list of gridlines available in the current view. Click the line whose formatting you want to change. The changes you make in the Normal and At interval sections apply to that selected line.
Normal section
Use this section to set the styles and colors for the gridline selected in the Line to change box.
Type Specifies the style for the selected gridline. Styles include solid, dots, and dashes. For no line, select the first option, which is blank.
Color Specifies the color for the selected gridline.
At interval section
Use this section to set a contrasting gridline to appear at an interval you set. Interval gridlines are not available for all types of gridlines.
None Specifies that you don't want gridlines to appear.
2 Specifies that you want gridlines to appear on every second row or column.
3 Specifies that you want gridlines to appear on every third row or column.
4 Specifies that you want gridlines to appear on every fourth row or column.
Other Specifies a custom interval. Click the Other option, and then type a number in the box to specify the interval for gridlines to appear.
Type Specifies a line type for the interval gridline, for example, dots or dashes.
Color Specifies a line color for the interval gridline.
