It folds and unfolds markdown sections following the headers.
Commands: 1. 'markdown-folder:cycle': => Cycle heading at cursor (Collapse all - show headings - show all) 2. 'markdown-folding:foldall-h1': => Fold all h1 headings
Suggested bindings (not implemented, use in your personal settings if you like):
'atom-text-editor[data-grammar="source gfm"]:not([mini])': 'tab': 'markdown-folding:cycle'
Good catch. Let us know what about this package looks wrong to you, and we'll investigate right away.