fix some comments

cmd/tendermint/commands/run_node.go

@@ -43,6 +43,8 @@ func AddNodeFlags(cmd *cobra.Command) {
 // It allows other projects to make Tendermint binaries with custom signers and applications.
 type FuncSignerAndApp func(*cfg.Config) (types.PrivValidator, proxy.ClientCreator)
 
+// DefaultSignerAndApp is a default FuncSignerAndApp that returns a PrivValidatorFS
+// and a DefaultClientCreator using the relevant fields from the config.
 func DefaultSignerAndApp(config *cfg.Config) (types.PrivValidator, proxy.ClientCreator) {
 	privValidator := types.LoadOrGenPrivValidatorFS(config.PrivValidatorFile())
 	clientCreator := proxy.DefaultClientCreator(config.ProxyApp, config.ABCI, config.DBDir())

cmd/tendermint/main.go

@@ -27,7 +27,7 @@ func main() {
 	//	* Use an external signer for their validators
 	//	* Supply an in-proc abci app
 	// can copy this file and use something other than the
-	// default SignerAndApp function
+	// DefaultSignerAndApp function
 	signerAndApp := cmd.DefaultSignerAndApp
 
 	// Create & start node