Technical Drawing/Drafting

I NEED THE COMPLETE DRAFT FOR TAKE A OPINION

The first figure has too many dimensions eradicated to understand what you're asking about.  The term "CUTTER" I think is to describe the size of the tool used to cut the hole feature. 

I think the second figure shows a dimension between the two centerlines with a very small distance of 0.100.  Not sure why both jogs are exactly at the extension lines, unless it to designate what the centerlines belong to?

In many countries, a comma is used for a decimal point; in the US, a period is used for the decimal point. I think Canada uses periods also?

Not sure why there is a bubble around some dimensions. Might be for inspection purposes? There should be an index somewhere on the drawing explaining that.

the balloons in the dimensions are used to highlight the very important dimensions in the plane, the tolerances in the design must follow an internal standard, for example the tolerances in the manufacture of a structure are not the same as the manufacture of a matrix for injection .

Thanks! The red ovals were done my me in mspaint. I was more just referring to this particular series of symbols. I assume it's on a 45° or something. Commas are used by basically every non-English speaker.