The sign for "real" is the
same sign as the sign "TRUE" which can be used to mean many English
concepts such as: sure, indeed, absolutely, "you're welcome,"
really, very, etc...
The sign for "real" (or TRUE) is
made by placing the dominant index finger against your lips. If you are
right-handed, your palm should face left.
index finger forward a few inches using a quick motion.
The sign "real" also means "true" as in:
Do you like true/false tests?