Parallel processing. Multiple print processes are all carried out simultaneously. The number of background printing threads depends on the hardware; specifically on the processor type. Each processor core can accommodate a single printing thread. This default can be changed. For more information, see section Parallel Processing in Loftware Automation user guide.

Asynchronous mode. As soon as the trigger pre-processing completes and the instructions for the print engine are available, the printing thread takes it over in the background. The control is returned to the trigger so it can accept the next incoming data stream as soon as possible. If synchronous mode is enabled, the control is not returned to the trigger until the print process is finished. This can take a while, but the trigger benefits from providing feedback back to data-providing application. For more information, see the section Synchronous Mode in Loftware Automation user guide.

	Note
	Using Save error to variable option in Action Execution and Error Handling does not yield any result in asynchronous mode, as the trigger does not receive feedback from the print process. To capture the feedback from the print process, enable synchronous mode first.

Labels: sets the number of printed labels. Data source specifies or adds a variable that defines the label print quantity dynamically.

	Note
	Variable value is usually assigned by the Use Data Filteraction and must be integer.

Variable quantity (defined from label variable): specifies a label variable that defines the label quantity to be printed.

The trigger doesn't receive the number of labels to be print, so it passes the decision to the label template. The label might contain a connection to a database, which provide the label quantity, or there is another source of quantity information. A single label variable must be defined as "variable quantity".

Number of skipped labels: specifies the number of labels that are skipped on the first page of labels. The sheet of labels might have been printed once already, but not entirely. You can re-use the same sheet by offsetting the starting position. This option is applicable, if you print labels to sheets of labels, not rolls of labels, so it's effective for office printers and not for label printers.

Identical label copies: specifies the number of label copies to be printed for each unique label. For fixed labels, this option produces the same result as the main Number of Labels option. For variable labels, such as labels using counters, you can get the real label copies.

Label sets: specifies how many times the entire label printing process should repeat.

Metadata: with each print job writes your printing comments to Control Center. You can see your Metadata in History > Printing > Print Metadata column. You can use Metadata for sorting, filtering, and other functions in Control Center. Metadata does not affect your printing or print streams. You use Metadata for logging your additional information about your print jobs in Control Center. Metadata can include LOT number or other label variables, printer names, and user/system generated values.