**    predictable", i.e. these shortcuts reliably focus the top/bottom item.
**  o Shortcut(s) to (re)load /timeline with different View Style or Entry Limit
**    by appending query parameters `&ss={ViewStyle}&n={EntryLimit±N}&udc=1' to
**    the URL; alternatively set keyboard focus to the "View Style" <select> or
**    to the "Max:" <input> field.
**  o Auto-expand the hidden details (hash, user, tags) for focused entries in
**    Compact View (by inheritance via CSS class `.timelineFocused').
**  o Shortcut(s) to (re)load /ckout (with or without `exbase' query parameter).
*/
(function(){
  window.addEventListener('load',function(){
// "Primary" (1) and "secondary" (2) selections swapped compared to CSS classes:
// (1)  .timelineSecondary →
//          /vdiff?to=, /timeline?sel2=
// (2)  .timelineSelected:not(.timelineSecondary) →