220.127.116.11 Dot Directory Names
The pathname components of "." (single period) and ".." (two periods) are reserved as dot directory names.
Except where explicitly permitted, a pathname component that is a dot directory name MUST NOT be sent over the wire.
When parsing pathname components, a dot directory name of "." refers to the current directory name component and a dot directory name of ".." refers to the parent directory name of the current directory name component.
Some examples to illustrate:
In the pathname "dirA\.\dirB", the "." refers to dirA, so this expression is equivalent to "dirA\dirB".
In the pathname "dirA\dirB\..\dirC", the ".." refers to dirA, so this expression is equivalent to "dirA\dirC".
A dot directory name of ".." at the root of a share MUST be treated as equivalent to ".". For example: \\ServerX\ShareY\..\dirA is equivalent to \\ServerX\ShareY\.\dirA (which is equivalent to \\ServerX\ShareY\dirA).