In the piano score, that is, the staff, cresc (Crescendo) means "crescendo", dim (Diminuendo) means "decrescendo", and rit (Ritardando) means "slow down, suddenly slow down". They all belong to the speed notation in the staff.

Other common speed signs:

1. Piu allegro means faster speed.

2. Meno allegro slows down.

3. Piu mosso is faster.

4. Poco a poco gradually.

5. Accelerado (accel) gradually speeds up.

6. Rallentando (rall) gradually slows down.

7. A tempo original speed, speed restoration.

8. Tempo primo (Tempo) original speed, speed restoration.

Extended information:

Musical Notation is a notation method commonly used in the world. It marks different time values ??on five equally spaced parallel horizontal lines. Music notes and other symbols are used to record music, and it is one of the most widely used musical notations.

The earliest birthplace is Greece, and its history is much earlier than the simplified musical notation in numerical form. In ancient Greece, the main form of music was vocal music. In the Roman era, another symbol began to be used to represent the pitch of the sound. This notation was called "Newm notation."

Staves mainly serve keyboard instruments, and familiarity with staffs is the basis for keyboard players to perform well.

Reference materials:

Baidu Encyclopedia - Staff