I don't completely understand the question, but if your asking about key words or facts related only to the sign Ophiuchus, there is a long list of possible keywords, and me being of the Star Sign Ophiuchus i can completely agree with the following list of keywords defining the person who has the star sign of Ophiuchus.
However if your asking for the stand alone qualities of Ophiuchus or Serpentarius, then most likely your looking for the history behind the star sign, it being the only star sign based off a real living person. Imhotep, or in myth Aesclepius is the founder of medicine and if i remember correctly the myth behind the star sign is that he began the birth of medicine by watching a snake revive its mate by using a herb that it found in the wilderness and making the mate eat it, after which he began doing the same, eventually finding the cure for death, and after finding the cure for death the gods cast him in the sky because he could live forever but they did not want anyone else to find this cure and live forever. The snakes are represented in the Caduceus, or the medical staff, there are 2 of them representing the 2 snakes that founded medicine for Aesclepius and the wings is the sign of him being thrown into heaven. As well as being the first real physician in the ancient world, he is also refered to as the God of Medicine. Also Aesclepius is depicted as a bearded man wearing a robe that leves his chest uncovered and holding a staff with his scred single serpent coiled around the staff symbolizing renewal of youth as the serpent casts off its skin. This depicition of Aesclepius shows up in ancient times as far as over 4000 years ago.
Serpens is in the grasp of Ophiuchus.
The true spelling of the constellation is Ophiuchus.
Ophiuchus is a half water and half fire sign.
Rasalhague is the brightest star in the constellation Ophiuchus
special features
they do not have special features
the best time to see the constellation Ophiuchus is in July (at 9:00pm)
Ophiuchus is not a zodiac sign in Western astrology, which only uses 12 zodiac signs and is based on the Tropical zodiac.
Ophiuchus is a constellation the sun passes along the sky, so it is a zodiac constellation, but modern astrology doesn't have anything to do with the constellations anymore. In some areas, Ophiuchus is given a zodiac sign, which looks like a U with a squiggly line through it.
That it has no special features.
some special features are that they glow
what special features does a right whale have