What is slice pipe?

{{ value_expression | slice : start [ : end ] }}

@Component({
  selector: 'list-pipe',
  template: `<ul>
    <li *ngFor="let i of greeting | slice: 0:5">{{ i }}</li>
  </ul>`,
})
export class PipeListComponent {
  greeting: string[] = ['h', 'e', 'l', 'l', 'o', 'm', 'o', 'r', 'n', 'i', 'n', 'g'];
}