Hello. I noticed a bug in gitk (as delivered with Git for Windows 1.8.4.msysgit.0).
The description of the current commit (left down quarter) does contain items "Parent:" and "Child:".
This is not true if gitk is called with a <path> parameter.
These should actually be labeled "Previous" and "Next", as they point to the neighbours is the displayed list of commits.
Have a nice day, Stepan Kasal