User blog comment:Nabukun/Anyone reading Japanese here?/@comment-1739368-20160412060511/@comment-1739368-20160419232450

Here's roughly what all the paragraphs say. Pretty much basic knowledge, but an official source for citing this info is good too.

"Stands in prinicple can only be used within a predetermined range centering around the Stand's owner. As such, for the sake of convenience, the range that a stand can perform tasks is referred to as "Firing Range."

A stand's range and accuracy are inversely proportional; the further the stand moves away from it's firing range, the less power it has. This principle is applied to almost all stands. Furthermore, this can be construed more specifically as "effective" firing range, as a stand will only gradually lose power the further it deviates from it's firing range, rather than just stop working. The stand range is effectively just the range where it can effectively perform.

From a general point of view, all stands can be roughly divided into two types: "Short distance (A-type)", and "long distance (B type). As a trend, short-range types has great power, many of which excel at direct blows or destruction (Silver Chariot, Crazy Diamond, Stick Fingers, etc.) Long -range types typically have a special ability that can let them indirectly attack. (Hierophant Green, Echoes ACT1, Beach Boy, etc.)

Some long-distance types are referred to as "Automatic Pilot (B' Type), in which the "power vs distance from user" principle does not apply. This is exactly what is touched upon in the third stand theorem, in that autopilot types are typically an extension of an "effect" that results in a stand triggering. As such these stands are independent of the stand owner's will and mental strength and their power does not drop. As a related note, certain stand abilities do not have specified ranges (Earth, Wind and Fire),an example being time-based powers, such as The World or King Crimson."

- Artbook

I'm still curious about how the Stand Pages look. I can never find a single picture of one online outside the cutout stat boxes.