As it is a scriptable object, linking files is not mandatory. Linking files only provide to save data in the specified file or read data from the specified file. You can still use it as a regular scriptable object.
A comma-separated values(CSV) file is a delimited text file that uses a comma to separate values. Each line of the file is a data record. Each record consists of one or more fields, separated by commas. Using the comma as a field separator is the source of the name for this file format. A CSV file typically stores tabular data (numbers and text) in plain text, where each line will have the same number of fields. For the definition, please see here.
Right-click on the Project window of Unity Editor and select Create/Two Cats Code/Data Manager/CSV Manager to create one. You may create multiple CSV Managers as you want.
Click the icon in the inspector to open the Ini-File Manager Editor Window.


CSV Manager is currently editing.
Linked File.Linked File.Edit Mode.
, to split the keywords.