Hi all!
I am learning the audiooutput of Qt Example.
In the pro file, there is a following sentence.
target.path = $$[QT_INSTALL_EXAMPLES]/multimedia/audiooutput
Q1)What is this "$$[QT_INSTALL_EXAMPLES]"
Q2) What is a function of "target.path = $$[QT_INSTALL_EXAMPLES]/multimedia/audiooutput"

If you give me any answer or comment, I am very happy.

pro file===
TEMPLATE = app
TARGET = audiooutput

QT += multimedia widgets

HEADERS = audiooutput.h

SOURCES = audiooutput.cpp \
main.cpp

target.path = $$[QT_INSTALL_EXAMPLES]/multimedia/audiooutput
INSTALLS += target

Best regards