# Comments: Additional Metadata Properties
See also the concept page.
# Comment Metadata Overview
This list shows comment metadata keys.
The "Actions" column gives you access to these options:
- (Minus Sign): Delete a comment property key. Trying to delete one in use will lead to an error.
- (Pencil): Open the edit dialog for this metadata key.
# Comment Property Edit Dialog
"DataType" is a select with only three possible values: String, Date and Number.
Placeholder is an optional field.
The keys created here can be assigned to comment categories on the respective admin config page.