Normalizing Vectors?

[[La...]]

During troubleshooting when running a part, sometimes I will normalize a vector and I have noticed that when doing that it makes the A1 and A2 angle for the 3D feature check a perfect zero. I was curious if that is all it is or if there is more to it? Similarly, whenever I open up a position from the characteristic menu, I see there is a letter "P" and a bent line icon next to it and I was wondering what is the exact purpose of those?

[[Ma...]]

"P" will evaluate in nominal length of cylinder for example.

Bended will evaluate on measured length.

I am not sure what you mean by your correction of vectors.
On points or on what or when and why you do it.

[[La...]]

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I'd say when and why. For example if I am checking a concentrcity and it is out tolerance, there are certain instances where checking normal vector within the datum feature will cause the concentricity to check better.

[[La...]]

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I also wanted to ask, whenever you press on the "P" you are able to change the measure reference length. Is changing the measured reference length similar to the "bended" function since you could change the reference length of your cylinder to only what was measured?

[[Ma...]]

Well ok,

by normalization you are talking about restriction in feature's evaluation tab. It' just calculating measured data with fixed attribute ( restricted ).
You can get more correct center of partial circle by forcing calculation with norminal radius. Same applies to A1,2.

Using "P" usually means projected. In TP you can use that for projected tolerance.