lib.mainnav = HMENU
lib.mainnav {
  wrap = <ul class="navbar-nav mr-auto">|</ul>
  1 = TMENU
  1 {
    expAll = 1

    NO = 1
    NO {
      wrapItemAndSub = <li class="nav-item">|</li>
      ATagParams = class="nav-link"
      stdWrap.htmlSpecialChars = 1
      ATagTitle.field = abstract // subtitle // title
    }

    CUR < .NO
    CUR.wrapItemAndSub = <li class="nav-item active">|</li>

    IFSUB < .NO
    IFSUB {
      wrapItemAndSub = <li class="nav-item dropdown">|</li>
      ATagParams = class="nav-link dropdown-toggle" data-toggle="dropdown"
    }
  }

  2 < .1
  2 {
    wrap = <div class="dropdown-menu" aria-labelledby="navbarDropdown">|</div>

    NO.wrapItemAndSub >
    NO.ATagParams = class="dropdown-item"

    IFSUB >
    CUR >
  }

  #3 < .2
  #4 < .2

}