Sugg. No. 1: Variable grid size

[just2blue4u]

After using Zabbix for some time now, i have made some notes of what i am missing.
Now i think it's time to talk about them...
Here's no. 1:

I didn't find a way to edit a graph's grid size.
Often there are more or less horizontal lines needed...

[just2blue4u]

This is especially useful when a graph with values between 0 and 100 is drawn. Because of the 5 horizontal grid lines, the values at the lines are 16.66, 33.33, 50, 66.66, 83.33 and finally 100 . This isn't beautiful... :-/

Better: 20, 40, 60, 80 and 100!
or 10, 20, 30, ...
or 25, 50, 75, 100 ...
...