What does "demonstrative determiner" mean?

a determiner used to demonstrate the identity of the thing referenced by the following noun; in English, they include this, these, that and those

Demonstrative determiner

Common synonyms include: compose a paragraph, das, deictic determiner, demonstrative, demonstrative adjective, demonstrative article.

noun

noun ·Uncommon ·Advanced level

Noun

1
a determiner used to demonstrate the identity of the thing referenced by the following noun; in English, they include this, these, that and those
"In the sentence "I like this music", the word "this" is a demonstrative determiner."

"In the sentence "I like this music", the word "this" is a demonstrative determiner."