On P&ID's with many connectors, it is inconvenient to try to record which line number you were on on each page when you go to the next page. There is no way to see the previous page or get back to it. Please highlight where you came from.
The following image shows the original P&ID where the user shows the next P&ID that needs to be directed to.

This image shows when directed to the said P&ID. but cannot find from where was the user directed from.

To find this needs to keep another note. which is inconvenient. Highlighting where was directed from will be very helpful.