evt-angular-ovi/src/app/components/lb/lb.component.html

<span class="lb" 
    [evtHtmlAttributes]="data?.attributes"
    [attr.id]="data.id" [attr.data-rend]="data.rend || ''" [attr.data-facs]="data.facs || ''">
    <br *ngIf="displayBlock$ | async"/>
    <span class="lineN" *ngIf="data.n && (displayBlock$ | async)">{{data.n}}</span>
</span>