Clarify spec's articulation of valid redemption requesters
@@ -55,11 +55,23 @@ not during at-term redemptions.
[[requests]]
== Redemption Requests
-If the deposit is in good standing (has not been accused of fraud, or entered
-signer liquidation), only the holder of the corresponding tBTC Deposit Token
-may request redemption. To do so that person makes a _redemption request_
-transaction to the smart contract on the host chain. The _redemption request_
-includes the following:
+A redemption request can be submitted in a few cases:
+
+* If the deposit is in good standing (has not already been redeemed, has
+ not been accused of <<failure/index.adoc#fraud,fraud>>, and has not entered
+ <<bonding/index.adoc#liquidation,signer liquidation>>), pre-term, and the
+ requester holds the corresponding tBTC Deposit Token.
+* If the deposit is in good standing and is at or past <<at-term,term>>,
+ irrespective of whether the requester holds the corresponding tBTC Deopsit
+ Token.
+* If the deposit has entered <<bonding/index.adoc#pre-liquidation,courtesy
+ call>>, an undercollateralization state designed to allow closing deposits
+ before they become dangerously undercollateralized, irrespective of whether
+ the requester holds the corresponding tBTC Deposit Token.
+
+To request redemption, a requester makes a _redemption request_ transaction
+to the smart contract on the host chain. The _redemption request_ includes
+the following:
1. A Bitcoin transaction fee amount
- must be >={min-redemption-btc-fee} ({min-redemption-btc-feerate})
