## Dynamics
In this chapter we will cover how you can attach dynamic marks to single units and how you can add crescendo and diminuendo to the score.
### 1. Dynamics for a single unit
Let's start with following example:
You can set a direction for dynamics:
You can use different phrasing to set a direction:
You can also correct vertical position of a dynamic mark (although it's always adjusted so it does not intersect other elements):
### 2. Crescendo and Diminuendo
In the following way you can create crescendo and diminuendo:
You can omit dynamic letters if you don't need them.
Like for dynamic marks for single units, you can set direction of crescendo and diminuendo in different ways:
By default, you can expect that dynamics are always above or below stave. In this case, we use wording like `above stave` just to explicitly emphasize it.
Vertical position of dynamics are always adjusted, so that they don't intersect other elements. But you still can correct it:
Unit coordinates for crescendo/diminuendo work absolutely in the same way as for slurs:
1. If a `line` is not specified after `crescendo/diminuendo` key word, then it applies to the last declared line before `crescendo/diminuendo`.
2. If you don't specify `measure`, `stave` and `voice` after `crescendo/diminuendo` key word, it always assumes that you mean `first measure`, `first stave` and `first voice`.
3. You can specify only `measure` coordinates along with `unit` coordinate(like `first note in first measure`). You cannot set `stave` and `voice` along with `unit` coordinate, only right after `crescendo/diminuendo` key word to set a stave and voice to whole crescendo/diminuendo, because crescendo/diminuendo is not a cross-stave or cross-voice element. And you cannot set `line` coordinate along with `unit` coordinate, because each crescendo/diminuendo must be delcared for each line where it is located. This separation allows of coordinates to set rules on crescendo/diminuendo's behaviour more clearly.
4. If you specified `measure` for first unit in a crescendo/diminuendo, and those coordinates don't change for other units, then you don't need to repeat them.
**P.S.:** You can use numbers from 1 to 10 as words. For example, `1` is `first`, or even `1st`. We could've made possible that all numbers can be expressed as words, but unfortunately it would slow down highlighting in the editor and rendering the image. So, it was decided to enable this feature only for numbers from 1 to 10, since majority of times only these numbers are used and moreover it's easier just to type numbers as numbers. But you still can write `11` as `11th`. When you type numbers to declare coordinates (like `line`, `measure`, `stave`, `voice`, `chord/note/unit`), you can put them before or after those key words, like for example: `first measure` or `measure 1`.
Read next: Pedal marks
