What is the black triangle in the upper left corner of a terminal

[MF]

For LabVIEW 11 (might have been in LabVIEW 10 too), there is a black triangle on the terminal (or icon) of the block diagram for some of the terminals (front panel controls) and not others. The ones that have the black triangle on them have the problem of not being able to find the reference associated with them (right click front panel or block diagram control and go to Find -> .., only Terminal and Instance come up). If there is not black triangle, it is easy to find the reference (right click, Find -> reference). If someone has a clue about this, please let me in on the secret.

Michael

[Alhern]

Hi Michael.

You mean this?

It's a Type Definition, or a Strict Type Definition. A kind of control that you use as a template for other controls, It "locks" some of its class's properties so you can't modify them progamatically or from the front panel of a VI. They're useful when you find yourself creating lots of controls (or constants) that have the same properties.

https://decibel.ni.com/content/docs/DOC-15759

Here they explain how to make one.