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It would be very useful if there was a way to check what other fields are dependent on a certain field.
For example, if one formula field B includes the field A in its formula, show somewhere in the header of Field A that field B uses it for calculation.
Or, if Field C from Table B uses field A from Table A as a rollup.
This would make things much easier when trying to figure out whats going on in a large database. Or at least make things easier when trying to do a cleanup and delete some unused fields.
There is already a Block that does that (Schema Block).