[Greg McKaskle]

Good question. One of the first things I generally do in a programming system or environment is learn about the help systems. Once I know that, it is easier to find answers to a whole range of questions.

If you are having trouble identifying what something is in LabVIEW, the first step is to open the Context Help window. It is under the Help menu and has Ctl-H as its shortcut. If the context help window is open, you can hover over the unknown item and the window will give you a summary of what the object is and what it does. This is especially true of the string and math icons in LabVIEW and of subVIs that other people have written.

In this case, it will tell you the data type and name of the item. It will contain a detailed help link in the window. If you follow that, it will explain that those are Front Panel Terminals and that they represent a Boolean and a Cluster of numbers on the Front panel. In this case, they represent the point in the diagram when it will read the button and cluster and use the values on the diagram. If you need to go deeper, it will often link to an example or related topics.

Hope that helps. Please ask if you have other questions.
Greg McKaskle