Do Once - Allows a flow execution to happen only once.
Do Once And - Allows the Do Once out Flow to perform only once, simultaneously allows the next line to happen infinite times.
Do Once Then - Allows the Do Once out Flow to perform only once, Waits a frame to complete, Does the 'Then' Flow out after. Once it has already entered, it will no longer wait a frame to perform then. It will perform every frame an input Flow occurs.
All Macros can be reset and started again.
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