Able to choose the grid colors
1) Able to choose the grid color. Shades of gray or other user's color choices.
2) Grid with more shades help to pin point a grid section when working with multiples SCALES such as inches, feet and others scales.
3) In Visio version #1 released in 1992 their was a dynamic green cross that moved in sync with the cursor allowing comparing a pair of two values with the grid.. Need more reasearch about that...
Thanks so much!