Program Flow Nodes

Call Chain
Returns an array of every VI that calls this node, from the current VI to the top-level VI.
Case Structure
Contains one or more subdiagrams, or cases, exactly one of which executes when the structure executes.
Disable Structure
Contains one or more subdiagrams, or cases, of which only the enabled subdiagram executes.
Event Loop
Creates an Event Structure within a While Loop.
First Call?
Indicates whether the diagram or subdiagram containing this node is running for the first time since the top-level caller began execution.
For Loop
Executes its subdiagram n times.
Select
Returns one of two specified values depending on a Boolean value.
Sequence Structure
Consists of one or more subdiagrams, or frames, that execute sequentially. Use the Sequence Structure to ensure that a subdiagram executes before or after another subdiagram.
Timer Count
Returns the value of the timer.
Wait
Waits a specified amount of time.
Wait Until Next Multiple
Waits until the value of the operating system's timer becomes a multiple of a specified amount of time. Use this node to synchronize activities.
While Loop
Repeats the code on its subdiagram until a specific condition occurs.