The professional terms "1 room" and "2 rooms" in simplified musical notation refer to the different endings corresponding to the different number of repetitions in the repeated notation.

A pair of double vertical bar lines plus two dots is a type of repeat mark, which means that after the bar between them is played, it will be repeated from the beginning.

The starting repetition mark is at the beginning (that is, repeating from the beginning), so there is no need to write the starting repetition mark.

If you want a different ending every time it is repeated, then I will use "House 1" and "House 2" to indicate it.

Music repeat notation is a recording form adopted to save space in music scores and facilitate the writing of music scores.

It is mainly divided into D.C. mark, D.S. mark, paragraph repeat mark and repeated skip mark.

It is widely used and belongs to basic music theory.

Its main function is to use an omission method to save the writing of music scores. ?

Paragraph repetition mark refers to two or more pieces of music that are exactly the same, or when a certain piece of music is repeated.

An omission method adopted in order to save the writing of music scores. It is represented by pre-repeating notation and post-repeating notation.