Great, now you can use this skill to improve on your maps and make them look more fluent when the dirt road doesn't suddenly pop up in the middle of grass, suddenly surrouding the high grass area.
It will take you some time to go back to your mapping and do these changes to every map where such errors were present but overall I am sure this will help improve your game.
By the way, this was not new thing at all and was widely known among majority of RPGmakers. However, it's not written anywhere clear that I know of and I've known very, very experienced RPGmakers who never knew about it before reading about it somewhere. It's a hidden function that should have gotten way much more exposure by Enterbrain, so honestly there's nothing weird or bad about The One just now stumbling about it.
Knowing or not knowing doesn't make one "noob" or "epic master of awesomeness", as like I said the function of such is largely undocumented. It took me several years before I would learn such things, then again I was with the program way before any Help File was ever present. (Though, I am fairly sure this function is not explained in depth in there?)
And that's when I decided to become a barber. "*sniff* your work, just inspires me to become a better lover." - Brent Murray.