Guide How to Spawn/Add items (it's still somehow limited but it's a start):
1. Download @cfemen Table here:
viewtopic.php?f=4&t=25289
2. Check the following options in table in Main Menu: "Patch Exec Flag", "Enable Console", "Set Console-Key to F1", "Cheat Manager".
3. Load your character.
How does spawning items work:
1. Game only loads items that are on map you are in. MAP, not world. So for example if you are in Beatific Palace map on Losomn world, game loads all items from Beatific Palace.
2. Find item you want from that map using Wikipedia and finding it' name. Now, to make ID out of it (I have Standard Edition, I have no idea if that matters), just put item Name between the following templates: Amulet_NAMEOFITEM_C, Ring_NAMEOFITEM_C, Weapon_NAMEOFITEM_C. For example ring "Cataloger's Jewel" would be Ring_CatalogersJewel_C
3. Open console using F1
4. Type "EnableCheats 1" (not sure if it does anything but I did it)
5. Go to map, for example you have to go to Beatific Palace to be able to spawn Cataloger's Jewel ring.
5. Use "Summon" command to spawn item in front of you, so: Summon Ring_CatalogersJewel_C
That's it. Now, it's still limited to maps you have loaded, however it's a start and at least we know how it works so maybe someone smarter will move stuff from here. I have no idea if it spawns items that are random drop on map, or can be on same map depending on event/template of that map, but well, that's how it works in general.