How to Establish Gridlines in Excel. Establishing gridlines on your Microsoft Excel chart produces horizontal or vertical lines that help line up plots with the left or bottom scale.

Modifying a Chart Manually After you create a chart, you can choose whether to apply one of the predefined chart layouts or specify your own layout. The Spreadsheet provides the capability to add axis ...

This patch fixes a boundary condition during vertical GridLine calculation. The previous version used strict less-than condition. When the min and max values fall on even multiples of the tic delta, ...