Kenneth Fisher is looking for the database page tied to a particular row:
It’s not one of those things you have to do frequently but every now and again you need to know what page a particular row is on. It’s not terribly difficult. There is a virtual column called %%physloc%%, but unfortunately it’s not terribly useful on it’s own.
Finding a record’s page probably isn’t something you want to do every day; this is more one of those “once in a great while” activities which can help with troubleshooting.