Storage Menu
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Storage menu contains:
Save function
Save selected function.
Save board
Save current board.
Save workspace
Save current workspace(all open boards).
Delete/Load function
Select a function from the saved functions table
and load(plot on the current board) it.
Delete/Load board
Select a board from the saved boards table and load it.
The loaded board will be added to the current workspace.
Delete/Load workspace
Select a workspace from the saved workspaces table and load it.
Current workspace will be lost.