In Illustrator, symbols are art items that are stored in the Symbols panel.
Your scripts can create, delete, and duplicate
When you create
symbol objects in your script, Illustrator adds them to the Symbols panel for the target document.
symbol item is an instance of a
symbol object in a document. Each
symbol item is linked to its symbol definition, so changing the definition of a symbol updates all instances of the symbol.
Your script can create, delete, and duplicate symbol items. Symbol items are Illustrator art items; therefore, they can be treated in the same way as other art items or page items.
You can rotate, resize, select, lock, hide, and perform other operations on symbol items.