diff --git a/r5dev/engine/client/client.cpp b/r5dev/engine/client/client.cpp
index 819fefe6..2dec0917 100644
--- a/r5dev/engine/client/client.cpp
+++ b/r5dev/engine/client/client.cpp
@@ -52,7 +52,13 @@ static const char JWT_PUBLIC_KEY[] =
 "dwIDAQAB\n"
 "-----END PUBLIC KEY-----\n";
 
-
+//---------------------------------------------------------------------------------
+// Purpose: check whether this client is authorized to join this server
+// Input  : *playerName  - 
+//			*reasonBuf   - 
+//			reasonBufLen - 
+// Output : true if authorized, false otherwise
+//---------------------------------------------------------------------------------
 bool CClient::Authenticate(const char* const playerName, char* const reasonBuf, const size_t reasonBufLen)
 {
 #ifndef CLIENT_DLL
diff --git a/r5dev/engine/client/clientstate.cpp b/r5dev/engine/client/clientstate.cpp
index 6fe1ee9a..98aca786 100644
--- a/r5dev/engine/client/clientstate.cpp
+++ b/r5dev/engine/client/clientstate.cpp
@@ -164,6 +164,11 @@ bool CClientState::VProcessServerTick(CClientState* pClientState, SVC_ServerTick
     }
 }
 
+//------------------------------------------------------------------------------
+// Purpose: get authentication token for current connection context
+// Input  : *connectParams - 
+// Output : true on success, false otherwise
+//------------------------------------------------------------------------------
 bool CClientState::Authenticate(connectparams_t* connectParams) const
 {
     string msToken; // token returned by the masterserver authorising the client to play online
diff --git a/r5dev/networksystem/pylon.cpp b/r5dev/networksystem/pylon.cpp
index 1df3196e..b3185f75 100644
--- a/r5dev/networksystem/pylon.cpp
+++ b/r5dev/networksystem/pylon.cpp
@@ -312,7 +312,17 @@ bool CPylon::CheckForBan(const string& ipAddress, const uint64_t nucleusId, cons
     return false;
 }
 
-bool CPylon::AuthForConnection(const uint64_t nucleusId, const char* ipAddress, const char* authCode, string& outToken, string& outMessage) const
+//-----------------------------------------------------------------------------
+// Purpose: authenticate for 'this' particular connection.
+// Input  : nucleusId   - 
+//          *ipAddress  - 
+//          *authCode   - 
+//          &outToken   - 
+//          &outMessage - 
+// Output : true on success, false on failure.
+//-----------------------------------------------------------------------------
+bool CPylon::AuthForConnection(const uint64_t nucleusId, const char* ipAddress,
+    const char* authCode, string& outToken, string& outMessage) const
 {
     rapidjson::Document requestJson;
     requestJson.SetObject();
@@ -341,6 +351,11 @@ bool CPylon::AuthForConnection(const uint64_t nucleusId, const char* ipAddress,
     return false;
 }
 
+//-----------------------------------------------------------------------------
+// Purpose: checks if the EULA response fields are valid.
+// Input  : &doc - 
+// Output : true on success, false on failure.
+//-----------------------------------------------------------------------------
 static bool ValidateEULAData(const rapidjson::Document& doc)
 {
     if (!doc.HasMember("data") || !doc["data"].IsObject())
@@ -360,11 +375,20 @@ static bool ValidateEULAData(const rapidjson::Document& doc)
     return true;
 }
 
+//-----------------------------------------------------------------------------
+// Purpose: checks if the accepted EULA is up to date.
+// Output : true on success, false on failure.
+//-----------------------------------------------------------------------------
 static bool IsEULAUpToDate()
 {
     return (eula_version_accepted->GetInt() == eula_version->GetInt());
 }
 
+//-----------------------------------------------------------------------------
+// Purpose: Gets the EULA from master server.
+// Input  : &outData -
+// Output : True on success, false on failure.
+//-----------------------------------------------------------------------------
 bool CPylon::GetEULA(MSEulaData_t& outData) const
 {
     rapidjson::Document requestJson;
@@ -533,7 +557,6 @@ bool CPylon::QueryServer(const char* endpoint, const char* request,
 void CPylon::ExtractError(const rapidjson::Document& resultJson, string& outMessage,
     CURLINFO status, const char* errorText) const
 {
-
     if (resultJson.IsObject() && resultJson.HasMember("error") &&
         resultJson["error"].IsString())
     {