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# 4.4. Section - metadata

- 4.4.1. Definition

## 4.4.1. Definition

1
The metadata section specifies an item of optional metadata that will be attached to the model.

### 4.4.1.2. metadata

    metadata =
      "metadata" , schema_name , integer-unsigned , integer-unsigned , integer-unsigned ;

3
The command takes the following arguments:

### 4.4.1.4. meta Arguments

1. The schema ID
2. The major version of the schema
3. The minor version of the schema
4. The non-negative number of lines of metadata that will follow the command

5
For any v, s, and n, the command meta v s n will indicate that the next n non-empty, non-commented lines will contain RFC4648 base64url encoded data of a type with vendor v and schema s. Implementations MUST raise errors if there are not exactly n lines of data specified before the section's end command.
4.3. Sections
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