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To show elements in the Workspace you can use [Worksheet > Show Decks] and check the desired Deck to reveal it.
Individual Filter cards can be shown by right clicking on their Fields in any location and checking [Show Filter]
Elements in the Workspace can be hidden by
1. Left clicking the small triangle found at the right side of any Deck and clicking [Hide Deck].
2. Selecting [Worksheet > Show Decks] and unchecking the desired Deck.
3. For individual Filters, you can right click inside the Filters Deck on a particular Field and uncheck [Show Filter].