Thanks, I saw that but wasn't sure how it works. In the file it says "// Zoom index value for minimap zoom key (0..5)" and the value is set to 5 by default. So can it be 6 or 7 ? Is the 5 the biggest?
OK after some testing it appears that the max value is 5. Can this be increased somehow? Currently a number over 5 doesn't make any difference.