Read the following text to answer questions number 17-18! Chinese characters arrived in Korea together with Buddhism during the pre-Three Kingdoms period. It was adapted for Korean and became known as Hanja, and remained as the main script for writing Korean through over a millennium alongside various phonetic scripts that were later invented such as idu and gugyeol. Mainly privileged elites were educated to read and write in Hanja, however, and most of the population was illiterate. In the 15th century, King Sejong the Great felt that the Hanja were not adequate to write Korean and this was the cause of its very restricted use, so (with a likely help of the Hall of Worthies) he developed an alphabetic featural writing system known today as Hangul, which was designed to either aid in reading Hanja or replace Hanja entirely. Introduced in the document Hunminjeongeum, it was called as Eonmun(colloquial script) and spread nationwide soon and increased literacy in Korea. Hangul was widely used by all the Korean classes but due to conservative aristocratic class, official documents were still written in Hanja during the Joseon era. Today, the Hanja are largely unused in everyday life due to its inconvenience, but it is still important for historic and/or linguistic studies. Both South and North Korea don't oppose learning Hanja even though they both don't use it anymore. Since the Korean War, through 70 years of separation, North–South differences have developed in standard Korean, including variations in pronunciation and vocabulary chosen, but these minor differences can be found in any of the Korean dialects and still largely mutually intelligible. Sumber:https://en.wikipedia.org What does ‘ various phonetic scripts ’ mean?

Question

Read the following text to answer questions number 17-18!

Chinese characters arrived in Korea together with Buddhism during the pre-Three Kingdoms period. It was adapted for Korean and became known as Hanja, and remained as the main script for writing Korean through over a millennium alongside various phonetic scripts that were later invented such as idu and gugyeol. Mainly privileged elites were educated to read and write in Hanja, however, and most of the population was illiterate. In the 15th century, King Sejong the Great felt that the Hanja were not adequate to write Korean and this was the cause of its very restricted use, so (with a likely help of the Hall of Worthies) he developed an alphabetic featural writing system known today as Hangul, which was designed to either aid in reading Hanja or replace Hanja entirely. Introduced in the document Hunminjeongeum, it was called as Eonmun(colloquial script) and spread nationwide soon and increased literacy in Korea. Hangul was widely used by all the Korean classes but due to conservative aristocratic class, official documents were still written in Hanja during the Joseon era. Today, the Hanja are largely unused in everyday life due to its inconvenience, but it is still important for historic and/or linguistic studies. Both South and North Korea don't oppose learning Hanja even though they both don't use it anymore.
Since the Korean War, through 70 years of separation, North–South differences have developed in standard Korean, including variations in pronunciation and vocabulary chosen, but these minor differences can be found in any of the Korean dialects and still largely mutually intelligible.

Sumber: https://en.wikipedia.org

What does ‘various phonetic scripts’ mean?