Helium 10 Folders is Helium 10's saved-list feature for storing keyword groups — e.g., main, related, misspelled, and master lists (see Helium 10 Four-List Keyword System (Main, Related, Misspelled, Master)) — under descriptive names for later reuse.
Save each keyword category into a clearly named folder so it can be pulled back into Helium 10 Listing Builder, Helium 10 Index Checker, or Helium 10 Keyword Tracker without re-running research.