# Introduction

The protocol allows anyone to be a supplier. These supplied funds are then used to issue loans for the borrower. We make use of the ERC 4626 standard for our supply vault. When a user deposits funds to the corresponding vault, rTokens of that particular asset (Representational tokens) are minted to the user. These rTokens represent user shares in the deposit vault. We follow a similar logic in borrow token contract, though it is not designed to follow the 4626 standard (as it is not a vault). User will receive dTokens (Debt tokens) for borrowing and these tokens represent the share of total debt owed by the user to the protocol.

<figure><img src="https://84867213-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FEVOQHsfy83WcYZwHX4bB%2Fuploads%2FTwfgFp9NW2JaDNI1Tdo2%2Fv1-supply_deposit.png?alt=media&#x26;token=18fc5280-de20-4ebb-b8f6-3e4191c46c87" alt=""><figcaption><p>Fig. 1 - Interaction between supply and borrow contracts</p></figcaption></figure>

The above diagrams describe the basic actions a supplier and borrow can do. It shows how to borrow and supply contracts interact with each other.