William Wallet

help Lists all the accounts in your wallet. You can choose to remove the currently selected account or clear all accounts from your wallet.
Send Ether
help Send ETH from the currently selected account to another account by address. The account address must have "0x" at the beginning to be a valid address.
Send To:
Create New Account
help Create a new account and add it to your wallet. Remember to save your address and private key in a secure location for use outside of this wallet, or to import again at a later time.

Note: the account will have no ETH upon creation but you can get some test ETH from a faucet with your address.
Private Key:
Import With Private Key
help Import an existing account into your wallet by private key. The private key must have "0x" at the beginning to be a valid address.
Private Key:
Export Wallet
help Encrypt your current wallet as a Keystore file for future use with a passphrase. It is highly recommeded to export if you are planning to leave the website as you will not be able to use your wallet again otherwise.
Import Wallet
help Upload a Keystore file containing an encrypted wallet and unlock with your passphrase. If the credentials are correct, the wallet will be imported.