Thanks a lot sir for your responseOkay.
WHAT HAVE YOU DONE TO TRY TO UNDERSTAND THE BLOCK? (It's an algorithmic block, by the way.)
HAVE YOU RIGHT-CLICKED ON THE BLOCK AND CLICKED ON 'ITEM HELP' OR 'BLOCK HELP'? IF SO, WHAT DID YOU SEE?
If 'Item Help' or 'Block Help' are greyed out, then there's no help for the block, which means it's probably a macro created with lots of primitive elements (compares; logic; multiplication; addition; division; subtraction; etc.).
GE is getting away from documenting blocks in the way they did it for more than 20 years. They are creating more functions using macros, which makes documentation AND understanding them difficult--but not impossible.
In the "tree view" (or whatever they call it) on the left side of the ToolboxST window you can right-click on the macro and open it and see all the various elements used to construct it and all of the "passed parameters" into and out of the block. They will all be exposed in the main function block window on the right.
It's not easy, but it's not impossible, either.
When you write for help, it really, Really, REALLY helps if you will tell us what you've done to try to troubleshoot or understand the problem or the question, and what the results were.
Sometimes hovering over signal names will show the "longname" description of the signal which might give a clue to its purpose. BUT, beware--sometimes there's no longname description, and sometimes the longname description is just plain wrong. But, that's all there is to work with sometimes.