(endtransaction)

End the processing of a transaction.

A transaction postpones certain types of processing until all the code between the start and end of a transaction has finished. Once finished, all the postponed processing takes place. For example, you can draw several new entities and not actually display them until the transaction ends. This would improve performance by not having to update the screen for each entity separately and instead updating only once after all of the new entities have been created.

Example

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starttransaction

LISP Compatibility

Programming Overview of LISP (LISt Processing) Language