Symbols meaning aside class name in xcode

Question

I am using Xcode 4.2 in which I have created various classes which shows various symbols like ?, A, M with the name of the classes. Project is running absolutely fine. Still I\'

Answer 1

After lots of searching I have got the answer at this link under "Keep Track of Your Files’ SCM Status" section.

M = Locally modified

U = Updated in repository

A = Locally added

D = Locally deleted

I = Ignored

R = Replaced in the repository

– = The contents of the folder have mixed status; display the contents to see individual status

? = Not under source control