diff --git a/doc/demo_milestone2.md b/doc/demo_milestone2.md
index 8e59d46..b8a304e 100644
--- a/doc/demo_milestone2.md
+++ b/doc/demo_milestone2.md
@@ -102,7 +102,34 @@ bin/wssubscribe_all
 ### Support following RPC methods
 
 author_submitExtrinsic
+- All transaction types are supported, but for the demonstration sending DOT transaction is used in this E2E test
+```
+bin/submit_extrinsic <sender address> <recipient address> <amount in fDOTs> <sender private key (hex)>
+
+for example:
+
+bin/submit_extrinsic 5ECcjykmdAQK71qHBCkEWpWkoMJY6NXvpdKy8UeMx16q5gFr 5FpxCaAovn3t2sTsbBeT5pWTj2rg392E8QoduwAyENcPrKht 1000000000000000000 0xABCDEF123.....123
+(private key was corrupted on purpose, both hex formats with or without leading 0x are supported)
+```
+
+Alternate RPC method with waiting - author_submitAndWatchExtrinsic
+```
+bin/submit_extrinsicNWatch <sender address> <recipient address> <amount in fDOTs> <sender private key (hex)>
+
+for example:
+
+bin/submit_extrinsicNWatch 5ECcjykmdAQK71qHBCkEWpWkoMJY6NXvpdKy8UeMx16q5gFr 5FpxCaAovn3t2sTsbBeT5pWTj2rg392E8QoduwAyENcPrKht 1000000000000000000 0xABCDEF123.....123
+(private key was corrupted on purpose, both hex formats with or without leading 0x are supported)
+```
+
 author_pendingExtrinsics
+
+The method may be examined with the following command with different parameters. Sometimes the default node (wss://alex.unfrastructure.io/public/ws) does not report any pending extrinsics. In order to get a non-empty result, we used alternate node: wss://poc3-rpc.polkadot.io/
+```
+bin/get_pending_extrinsics wss://alex.unfrastructure.io/public/ws
+bin/get_pending_extrinsics wss://poc3-rpc.polkadot.io/
+```
+
 author_removeExtrinsic
 ```
 TBD
@@ -111,6 +138,5 @@ TBD
 ### Support following WebSocket subscriptions
 
 author_extrinsicUpdate
-```
-TBD
-```
+
+Method submit_extrinsicNWatch subscribes to extrinsicUpdate's. 
diff --git a/test/get_pending_extrinsics.cpp b/test/get_pending_extrinsics.cpp
index ce63715..d4ea895 100644
--- a/test/get_pending_extrinsics.cpp
+++ b/test/get_pending_extrinsics.cpp
@@ -1,19 +1,22 @@
 #include "../src/polkadot.h"
+#include "helpers/cli.h"
 #include "helpers/mockjsonrpc.h"
 #undef NDEBUG
 #include <cassert>
 
+#define BUFSIZE 100
+
 int main(int argc, char *argv[]) {
     auto app = polkadot::api::getInstance()->app();
-    app->connect();
+    app->connect(getNodeUrlParam(argc, argv));
 
     cout << endl << endl << "============================ Get Pending Extrinsics ============================" << endl;
-    GenericExtrinsic peBuf[20];
-    int count = app->pendingExtrinsics(peBuf, 20);
+    GenericExtrinsic peBuf[BUFSIZE];
+    int count = app->pendingExtrinsics(peBuf, BUFSIZE);
 
     cout << endl << count << " pending extrinsics returned" << endl;
     for (int i = 0; i < count; ++i) {
-        if (i < 20) {
+        if (i < BUFSIZE) {
             // Checks
             assert(peBuf[i].signerAddress.length() != 0);
             assert(peBuf[i].length >= 100); // Minimum length == length of signature structure