'''Reference''' data types, also known as ''"Refnums"'', are temporary pointers to open objects. It is valid only for the perio
...nished with them to most efficiently use memory and other resources. Close refnums in the opposite order that you opened them. For example, if you obtain a re
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|13 = Merge Storage Refnums function{{!}}Merge Storage Refnums
...rage Refnums.png|frameless|border|Merge Storage Refnums|link=Merge Storage Refnums function]]
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...for passing objects on the block diagram, similar to File refnums or Queue refnums in LabVIEW. The native classes pass by value, similar to clusters and array
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...class hierarchy in LabVIEW, including [[VI Server]] refnums, .NET/ActiveX refnums, and [[LabVIEW Class|LabVIEW Classes]].
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...be closed when finished with them by using the Close Automation VI. As for refnums created by cascading to lower level properties, it is adviseable to close t
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...class hierarchy in LabVIEW, including [[VI Server]] refnums, .NET/ActiveX refnums, and [[LabVIEW Class|LabVIEW Classes]].
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...mming, if you need to multiplex FP Refnums (for example create an array of Refnums, then use a For Loop to index the array), or when you will have multiple Fi
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For data types with subtypes, such as arrays, clusters, and some refnums, this function also checks array dimensions and subtypes, but not the subty
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...e for the object that it points to. You can change between weak and strict refnums by right clicking on the refnum (or its terminal in the block diagram) and
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...y name used to lookup the assembly. When the assembly version changes, all refnums must be linked to the new version.
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Application Refnums are the references to an application instance. Before [[LabVIEW 8]], you wo
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...or each event you want to register for, then bundle the event registration refnums into a cluster
...removing it from a class), LabVIEW may fail to apply such change to event refnums or other container data types that include that type definition. VIs that r
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