# FAQs

**What is the difference between token A and token B?** 

Token A is sRLY and token B is the app token. 

**What is the address for sRLY?**

sRLY3migNrkC1HLgqotpvi66qGkdNedqPZ9TJpAQhyh

**What is the difference between a swap or direct transfer of sRLY to the curve?**

The only difference between a swap and a direct transfer of sRLY is whether the curve returns any of the token B out. Direct transfers of sRLY do not return any token B. Swaps of sRLY do return token B. 

**What causes the spot prices to move?** 

Generally changes in the spot price are due to changes in the amount of token A sRLY in the curve. 

For sRLY\
Direct transfer of sRLY to the curve and swapping sRLY for token B cause cause the spot price to move up.

For token B\
Swapping token B for sRLY will move the spot price down. Transferring token B to the curve will not affect the spot price. 

**Do I need to use sRLY on non-production environments for token A?** 

On non production environments, token A can be any SPL token. It is recommended that you create an SPL token that has [similar properties as sRLY](https://explorer.solana.com/address/sRLY3migNrkC1HLgqotpvi66qGkdNedqPZ9TJpAQhyh). 


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