Preferences: simplest and fastest way to accomplish that

I’ve to create a very simple file where store very few App preferences.
I’ve found thislink text, there’s something simplest and fastest?

I store preferences in a dictionary, so I can use descriptive keys.

You can use dictionary.Keycount to store the keys in a text file, and retrieve it later by assigning values to a new dictionary.

You can also store a json file. See Dictionary To JSON to store in MySQL DB. - General - Xojo Programming Forum
http://documentation.xojo.com/api/text/json/jsonitem.html

Check this example project coming with MBS Xojo Plugins: Preferences with local Database

It shows how to store preferences in a module with a dictionary in memory and a SQLiteDatabase as back storage.
No plugin required.