diff --git a/lib/bcoin/chain.js b/lib/bcoin/chain.js
index e7dc33d8..2689f20c 100644
--- a/lib/bcoin/chain.js
+++ b/lib/bcoin/chain.js
@@ -2095,7 +2095,7 @@ Chain.prototype.retarget = function retarget(prev, first) {
 };
 
 /**
- * Find a locator. Analagous to bitcoind's `FindForkInMainChain()`.
+ * Find a locator. Analagous to bitcoind's `FindForkInGlobalIndex()`.
  * @param {Hash[]} locator - Hashes.
  * @param {Function} callback - Returns [Error, {@link Hash}] (the
  * hash of the latest known block).
diff --git a/lib/bcoin/peer.js b/lib/bcoin/peer.js
index 87b56aa0..9943eb9b 100644
--- a/lib/bcoin/peer.js
+++ b/lib/bcoin/peer.js
@@ -1222,11 +1222,14 @@ Peer.prototype._handleGetData = function _handleGetData(items) {
     return done();
   }
 
+  // Hit the broadcast queue first.
   for (i = 0; i < items.length; i++) {
     item = items[i];
     entry = this.pool.inv.map[item.hash];
     witness = (item.type & constants.WITNESS_MASK) !== 0;
 
+    // If the item isn't present, queue it up
+    // to be checked in the mempool or chain.
     if (!entry) {
       check.push(item);
       continue;
@@ -1246,6 +1249,10 @@ Peer.prototype._handleGetData = function _handleGetData(items) {
       witness ? 'witness' : 'normal',
       this.hostname);
 
+    // Try to send the data.
+    // If the item was announce-only (i.e. the data
+    // isn't actually contained in the broadcast
+    // item), check this on the mempool/chain.
     if (!entry.send(this, witness))
       check.push(item);
   }
@@ -1253,6 +1260,8 @@ Peer.prototype._handleGetData = function _handleGetData(items) {
   if (this.pool.options.selfish)
     return done();
 
+  // Item wasn't found in broadcast queue.
+  // Check the mempool and chain.
   utils.forEachSerial(check, function(item, next) {
     var type = item.type & ~constants.WITNESS_MASK;
     var witness = (item.type & constants.WITNESS_MASK) !== 0;
diff --git a/lib/bcoin/pool.js b/lib/bcoin/pool.js
index d6a65de8..24f70988 100644
--- a/lib/bcoin/pool.js
+++ b/lib/bcoin/pool.js
@@ -2254,6 +2254,8 @@ BroadcastItem.prototype.send = function send(peer, witness) {
   }
 
   if (this.type === constants.inv.TX) {
+    // Failsafe - we never want to relay coinbases.
+    // They are an insta-ban from any bitcoind node.
     if (this.msg.isCoinbase()) {
       peer.write(peer.framer.notFound([this]));
       bcoin.debug('Failsafe: tried to relay a coinbase.');