Till NAV 2018 we have features called as ‘About this page’ which is very useful to analyze the business data or deep insight the table for those fields which are not visible on main page or sub page.
In business central this features replaced with Page Inspection with more features.
How do I enable Page inspection
Choosing inspect from top menu or by pressing Ctrl+Alt+F1
You can see box on right size which shows details for current record.
Top Features
- Page name with id
- Table Name with id
- All table fields
- Extension name which extend this page
- Applied Filters.
Stay tuned for more
Ammolh Saallvi Blog 
Basic stuff but useful. This is a very good NAV feature retained in Business Central
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