No, but, then again, I'm not sure if I'm talking any sense myself even though in my head I know what I mean.
When you enter a form in R12, if you click on 'Help' in the toolbar at the top you should see an option 'Diagnostics' this takes you to 'Examine' which allows you to see the column name the data is in. it sometimes gets switched off.
Ah, do you mean the system profile option that hides the diagnostics menu for either the whole site, or a given responsibility or user?
If so, go in sysadmin resp and go to the profile option values screen, and look at the profile option
Hide Diagnostics Menu Entry
The value needs to be 'No' at whatever level you need it to be visible
Additionally, you can if you so desire set the Profile option 'Utilities: Diagnostics' to 'Yes' at the required level, which will suppress the need to enter the apps password
Also, you may be confusing the examine functionality with the trace functionality, which does require a function to be added to the menu in order to get access to it.