diff --git a/19_4_Lightning_Network_Implementations.md b/19_4_Lightning_Network_Implementations.md
index eee9ba2..518a9aa 100644
--- a/19_4_Lightning_Network_Implementations.md
+++ b/19_4_Lightning_Network_Implementations.md
@@ -1,5 +1,6 @@
 ### Lightning Network  implementations
 
+In this brief review we list the most widely used implementations in the lightning network Today, although there are more.     Basis of Lightning Technology (BOLT) documents describe a layer-2 protocol for off-chain bitcoin transfers. The specifications are currently a work-in-progress and currently being drafted.
 
 | Name  | Description | BitcoinStandup | Language | Repository |
 | ------------- | ------------- | :---: | ------------- | ------------- |
@@ -7,3 +8,4 @@
 | LND  | Lightning Labs  | X | Go | [Download](https://github.com/lightningnetwork/lnd) |
 | Eclair  | ACINQ  | - | Scala | [Download](https://github.com/ACINQ/eclair) |
  
+