[Qt-creator] Couldn't find documentation for RELATIVEPATH in .pro

[Thomas Meyer]

Hi,
in the file:
qt-creator-2.2.0-src\src\libs\extensionsystem\test\manual\pluginview\test.pro
there is:
...
TEMPLATE = app

macx:CONFIG-=app_bundle

# Input
HEADERS += plugindialog.h
SOURCES += plugindialog.cpp

RELATIVEPATH = ../..
include(../../extensionsystem_test.pri)
...

I can't find any info for 'RELATIVEPATH' and
I can't find the file 'extensionsystem_test.pri'
Is it a odd ends?

Thomas