What are the areas in square brackets [ ]?

[mummy]

Can anyone tell me what the areas with the square brackets [ ] and Insert Area text are? They act very odd when inserting text around them and are fiddly to delete.

[Charles Kenyon]

Was this possibly created by a third party program like Wordperfect, OfficeLibre or OpenOffice?

They look like fields, like bookmarks, or Content Controls, but are not.

If you are trying to find a way to easily insert prompts, look at MacroButton Prompt Add-In as well as Content Controls.

Repeating Data Using Document Properties Content Controls and Other Mapped Content Controls

[mummy]

I'm actually trying to remove these from a 10-page document which has about 50 instances of this. If I try to use find & replace and just replace each instance with nothing, it leaves the square brackets behind.
Any other ways to get rid of them all quickly? Maybe even VBA code?

[Charles Kenyon]

I don't know what they are. I suspect that the document was converted from a different program.

They can be manually deleted although it won't be fun. Go to the space before them, select to the space after, delete, and add a space back.