- Use form one to see a list of all the items you're currently carrying around without using.
- Use form two to save typing.
- Use form three to type extra, like, you know, if you're into typing.
Note the distinction between "inventory" and "equipment".
The latter is the list of everything you're wearing, holding, or wielding.
Inventory is your stash of items not currently worn, held or wielded, but kept for later use.
Once you begin actually using an item in some way, it becomes part of your equipment.
Note also that certain items of Inventory are containers which can hold other items.
For instance, the bag you're carrying may be one which you can fill with small items.
These "contained" items won't appear in your list of inventory: you'll have to
actually look inside your bag to see what, if anything, is there.