(1) If the court has to be convinced about foreign law, science, art, signature or lapche, the related expert's opinion can be taken as evidence. Explanation: For the purpose of this section, "expert" means a person who has acquired special knowledge in a subject through special study, training or experience.
(2) If the court has to confirm an opinion regarding the signature of a person, the opinion of a person who has the opportunity to see the signature of that person and is in a position to recognize the signature shall be taken as evidence.
(3) If the court has to ascertain anything related to a religious, ethnic or public right or custom, the opinion of a person in a position to have special knowledge of such right or custom shall be taken as evidence.
(4) If the court has to ascertain whether a person has any relationship with another person or not, the opinion of a person who is in a position to have specific information about such relationship or relationship shall be taken as evidence.
(5) If the court has to ascertain the meaning of a particular word or words used in a particular place, the opinion of a person in a position to have special knowledge thereof may be taken as evidence.
(6) If a person's opinion is taken as evidence in accordance with this section, the facts supporting or refuting such opinion and the basis of such opinion shall also be taken as evidence.
(7) Any opinion expressed by a person shall be admitted as evidence in accordance with this section only if that person appears in court as a witness. However, it is not mandatory for the author of the book or article to appear in court to take the opinion expressed in a book or article by an expert of a subject or the basis of that opinion as evidence.