diff --git a/main.go b/main.go
index 1e5a191..ae6eef8 100644
--- a/main.go
+++ b/main.go
@@ -87,15 +87,14 @@ func selectRecordsToDelete(recs []libdns.Record) []libdns.Record {
 			return
 		}()
 	}
-
 }
 
 func main() {
 	ctx := context.TODO()
 
-	flag.StringVar(&domain, "d", domain, "Domain name, e.g. example.com")
+	flag.StringVar(&domain, "d", domain, "Domain name, e.g. example.com. env var: DOMAIN")
 	flag.StringVar(&sub, "s", sub, "Subdomain, e.g. blog. Use @ for root")
-	flag.StringVar(&token, "a", token, "Cloudflare API Token")
+	flag.StringVar(&token, "a", token, "Cloudflare API Token. env var: CF_TOKEN")
 	flag.TextVar(&ip, "i", ip, "IP address")
 	flag.StringVar(&cname, "c", cname, "CNAME target")
 	flag.StringVar(&path, "o", path, "Path to save all records as json, e.g. ./records.json")