User:Querii/sandbox

Hierarchy:
 * Stockholm metro
 * Stockholm metro stations (including art and architecture)
 * List of Stockholm metro stations
 * Abrahamsberg, Akalla, etc.
 * Stockholm metro rolling stock
 * C20, C30, etc.
 * Green line (Stockholm metro)
 * Yellow line (Stockholm metro) (or maybe skip this one entirely?)
 * Red line (Stockholm metro)
 * Blue line (Stockholm metro)
 * Stockholm metro infrastructure – or should infrastructure be covered in the line articles?