This is a possible summary:
The text is a transcript of a video class about the main changes brought by the new spelling agreement in Portuguese, which was intended to standardize the writing of all countries that have Portuguese as their official language. The teacher explains the changes in the alphabet, the accentuation, the umlaut, and the hyphen, using examples and exceptions. She also provides links to other classes on the channel about accentuation and hyphen rules. She asks the viewers to comment with a hashtag if they understood everything and says goodbye.
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1. The text is about the new spelling agreement of Portuguese, which aims to standardize the writing of all countries that have Portuguese as their official language.
2. The new spelling agreement was drawn up in 1990 by the academies of Portugal and Brazil, approved in 1995 in Brazil, but came into force only in 2009.
3. The new spelling agreement changed only 0.5 percent of the words in Brazilian Portuguese, mainly related to the alphabet, the umlaut, the accentuation and the hyphen.
4. The alphabet now has 26 letters, with the inclusion of k, w and y.
5. The umlaut was abolished, but the pronunciation of the words remains the same.
6. The accent is no longer used in open diphthongs ei and oi in paroxytone words, such as ideia and apoio, but it remains in monosyllabic or oxytone words, such as herói and céu.
7. The accent on i and o in paroxytone words is no longer used when they come after a diphthong, such as feiura and bocaiuva, but it remains in oxytone or proparoxytone words, such as Piauí and feíssimo.
8. The accent is no longer used in words that have doubled vowels ee and oo, such as creem and enjoo, but it remains in some differential accents that mark the past tense of poder (pôde), the verb pôr (pôr), the plural of ter (têm) and vir (vêm), and optionally in the noun fôrma (shape).
9. The hyphen is no longer used between different vowels or consonants, except with the prefixes ree and coo when the second element begins with e or o, such as reeleição and coautor.
10. The hyphen is used between equal vowels or consonants, except with the prefixes ree and coo when the second element begins with e or o, such as anti-inflamatório and micro-ônibus.