The following is our navbar:
~~NOCACHE~~
* [[news:2021_01_06|News]]
* 2789
* [[projekte:2751_2800:2789:|]]
* [[projekte:2751_2800:2789:242]]
* [[projekte:2751_2800:2789:272]]
* [[projekte:2751_2800:2789:303]]
* [[projekte:2751_2800:2789:333]]
* [[projekte:2751_2800:2789:364]]
* [[projekte:2751_2800:2789:393]]
* [[projekte:2751_2800:2789:424]]
* [[projekte:2751_2800:2789:454]]
* [[projekte:2751_2800:2789:485]]
* [[projekte:2751_2800:2789:515]]
* [[projekte:2751_2800:2789:546]]
* [[projekte:2751_2800:2789:577]]
* [[projekte:2751_2800:2789:608]]
* [[projekte:2751_2800:2789:638]]
* [[projekte:2751_2800:2789:669]]
* [[projekte:2751_2800:2789:699]]
* [[projekte:2751_2800:2789:730]]
* [[projekte:2751_2800:2789:761]]
* [[projekte:2751_2800:2789:789]]
* [[projekte:2751_2800:2789:2789_finanzen|]]
* 3016
* [[projekte:3001_3050:3016:]]
* [[projekte:3001_3050:3016:010|bis 2020]]
* [[projekte:3001_3050:3016:020]]
* [[projekte:3001_3050:3016:030]]
* [[projekte:3001_3050:3016:040]]
* [[projekte:3001_3050:3016:050]]
* [[projekte:3001_3050:3016:3016_wichtig]]
* [[projekte:3001_3050:3016:3016_finanzen]]
* …andere
* [[projekte:0000_1500:1092:|]]
* [[projekte:2051_2100:2052:|]]
* [[projekte:2151_2200:2200:|]]
* [[projekte:2451_2500:2456:|]]
* [[projekte:2451_2500:2496:|]]
* [[projekte:2551_2600:2584:2584_29|2584 CCL]]
* [[projekte:2651_2700:2689:|]]
* [[projekte:2751_2800:2780:|]]
* [[projekte:2751_2800:2789:|]]
* [[projekte:2851_2900:2877:|]]
* [[projekte:2851_2900:2881:|]]
* [[projekte:2851_2900:2885:|]]
* [[projekte:2901_2950:2907:|]]
* [[projekte:2951_3000:2979:|]]
* [[projekte:2951_3000:2984:|]]
* [[projekte:3001_3050:3016:|]]
* [[projekte:3001_3050:3044:|]]
* [[projekte:3051_3100:3065:|]]
* [[projekte:3051_3100:3074:|]]
* [[projekte:3051_3100:3095:|]]
* [[projekte:3101_3150:3103:|]]
* [[projekte:3101_3150:3104:|]]
* [[tipps:computer:trouble|]]
* Listen
* [[projekte:anlagens|]]
* [[tasks|]]
* [[projekte:6300:auftraege]]
* [[projekte:6300:auftrags_nummer|]]
* [[projekte:6300:bankgaranties]]
* [[projekte:6300:buchhaltung:facturen:|]]
* [[projekte:6300:buchhaltung:facturen_in:|]]
* [[projekte:6300:buchhaltung:facturen_uit:|]]
* [[wiki:nav|Navigation (indexmenu)]]
* [[navbar|Navigation (NavBar)]]
* [[ep:cooling]]
* [[tag|TAGs suchen]]
* [[task_hv|]]
* [[projekte:invoices|]]
You see that the 1st level is no link but just an indented item point. The 2nd level consists of real links for wiki pages. Maybe that helps somehow, if you (firstly) try to copy my structure and then later find our, what else you can make run.
Remark: The smileys are no smileys but :|