diff --git a/include/commandLine.h b/include/commandLine.h
index 8cb98f5..db865aa 100644
--- a/include/commandLine.h
+++ b/include/commandLine.h
@@ -394,6 +394,11 @@ struct CommandLine
      */
     inline int lua_setOption(lua_State * lua)
     {
+        if (lua_gettop(lua) >= 1 && lua_isstring(lua, 1) && std::string(lua_tostring(lua, 1)) == "help")
+        {
+            lua_writestring("setOption:\n  Arguments:\n    name [string],\n    value\n  Set option name to value.\n");
+            return 0;
+        };
         int args = lua_gettop(lua);
         if (args != 2)
         {
@@ -502,6 +507,11 @@ struct CommandLine
      */
     inline int lua_getOption(lua_State * lua)
     {
+        if (lua_gettop(lua) >= 1 && lua_isstring(lua, 1) && std::string(lua_tostring(lua, 1)) == "help")
+        {
+            lua_writestring("getOption:\n  Arguments:\n    name [string]\n  Get the value of option name.\n");
+            return 0;
+        };
         int args = lua_gettop(lua);
         if (args != 1)
         {
diff --git a/include/console.h b/include/console.h
index b6382dc..40df1cb 100644
--- a/include/console.h
+++ b/include/console.h
@@ -106,6 +106,11 @@ int dispatchCommandLine(lua_State * lua)
  */
 int lua_startRecord(lua_State * lua)
 {
+    if (lua_gettop(lua) >= 1 && lua_isstring(lua, 1) && std::string(lua_tostring(lua, 1)) == "help")
+    {
+        lua_writestring("startRecord:\n  Arguments: none\n  Start video recording.\n");
+        return 0;
+    };
     LuaExtraSpace * extraSpace = *static_cast<LuaExtraSpace**>(lua_getextraspace(lua));
     if (!extraSpace->visualisationState->recording)
     {
@@ -122,6 +127,11 @@ int lua_startRecord(lua_State * lua)
  */
 int lua_stopRecord(lua_State * lua)
 {
+    if (lua_gettop(lua) >= 1 && lua_isstring(lua, 1) && std::string(lua_tostring(lua, 1)) == "help")
+    {
+        lua_writestring("stopRecord:\n  Arguments: none\n  Stop video recording.\n");
+        return 0;
+    };
     LuaExtraSpace * extraSpace = *static_cast<LuaExtraSpace**>(lua_getextraspace(lua));
     if (extraSpace->visualisationState->recording)
     {
@@ -138,6 +148,11 @@ int lua_stopRecord(lua_State * lua)
  */
 int lua_play(lua_State * lua)
 {
+    if (lua_gettop(lua) >= 1 && lua_isstring(lua, 1) && std::string(lua_tostring(lua, 1)) == "help")
+    {
+        lua_writestring("play:\n  Arguments: none\n  Play the trajectory.\n");
+        return 0;
+    };
     LuaExtraSpace * extraSpace = *static_cast<LuaExtraSpace**>(lua_getextraspace(lua));
     extraSpace->options->play.value = true;
     return 0;
@@ -151,6 +166,11 @@ int lua_play(lua_State * lua)
  */
 int lua_exit(lua_State * lua)
 {
+    if (lua_gettop(lua) >= 1 && lua_isstring(lua, 1) && std::string(lua_tostring(lua, 1)) == "help")
+    {
+        lua_writestring("exit:\n  Arguments: none\n  Quit sfoav.\n");
+        return 0;
+    };
     LuaExtraSpace * extraSpace = *static_cast<LuaExtraSpace**>(lua_getextraspace(lua));
     *(extraSpace->exit) = true;
     return 0;
@@ -164,6 +184,11 @@ int lua_exit(lua_State * lua)
  */
 int lua_pause(lua_State * lua)
 {
+    if (lua_gettop(lua) >= 1 && lua_isstring(lua, 1) && std::string(lua_tostring(lua, 1)) == "help")
+    {
+        lua_writestring("pause:\n  Arguments: none\n  Pause the trajectory.\n");
+        return 0;
+    };
     LuaExtraSpace * extraSpace = *static_cast<LuaExtraSpace**>(lua_getextraspace(lua));
     extraSpace->options->play.value = false;
     return 0;
@@ -207,6 +232,25 @@ class Console
             end
             use(sfoav))";
         runString(init);
+
+        const char * help = R"(
+            function help(func)
+                if func == sfoav or func == nil then
+                    for k,v in pairs(sfoav) do
+                        v("help")
+                        print("\n")
+                    end
+                    return
+                end
+                for k,v in pairs(sfoav) do
+                    if v == func then
+                        func("help")
+                        print("\n")
+                        return
+                    end
+                end
+            end)";
+        runString(help);
     }
 
     ~Console(){ lua_close(lua); }
diff --git a/include/consoleWindow.h b/include/consoleWindow.h
index 5b5ebb5..0ae4c31 100644
--- a/include/consoleWindow.h
+++ b/include/consoleWindow.h
@@ -73,7 +73,6 @@ This is free software, and you are welcome to redistribute it under certain cond
         memset(InputBuf, 0, sizeof(InputBuf));
         HistoryPos = -1;
 
-        Commands.push_back("HELP");
         Commands.push_back("HISTORY");
         Commands.push_back("CLEAR");
         AutoScroll = true;
@@ -166,7 +165,8 @@ This is free software, and you are welcome to redistribute it under certain cond
 
         focussed = ImGui::IsWindowFocused();
 
-        ImGui::TextWrapped("Enter 'HELP' for help.");
+        ImGui::TextWrapped("Enter 'help()' for a list of functions.");
+        ImGui::TextWrapped("For help with each function: 'help(zoomCamera)'.");
 
         if (ImGui::SmallButton("Clear")) { clearLog(); }
 
@@ -260,14 +260,6 @@ This is free software, and you are welcome to redistribute it under certain cond
         {
             clearLog();
         }
-        else if (Stricmp(command_line, "HELP") == 0)
-        {
-            addLog("Commands:");
-            for (int i = 0; i < Commands.Size; i++)
-            {
-                addLog("- %s", Commands[i]);
-            }
-        }
         else if (Stricmp(command_line, "HISTORY") == 0)
         {
             int first = History.Size - 10;
diff --git a/include/luaBindings/camera.h b/include/luaBindings/camera.h
index 1afa101..5577321 100644
--- a/include/luaBindings/camera.h
+++ b/include/luaBindings/camera.h
@@ -11,6 +11,11 @@
  */
 inline int Camera::lua_cameraPosition(lua_State * lua)
 {
+    if (lua_gettop(lua) >= 1 && lua_isstring(lua, 1) && std::string(lua_tostring(lua, 1)) == "help")
+    {
+        lua_writestring("cameraPosition:\n  Arguments:\n    spherical [bool, optional]\n  Get the position of the camera.\n  By default in cartesian form.\n");
+        return 0;
+    };
     int args = lua_gettop(lua);
     bool spherical = false;
     if (args == 1)
@@ -41,6 +46,11 @@ inline int Camera::lua_cameraPosition(lua_State * lua)
  */
 inline int Camera::lua_setCameraPosition(lua_State * lua)
 {
+    if (lua_gettop(lua) >= 1 && lua_isstring(lua, 1) && std::string(lua_tostring(lua, 1)) == "help")
+    {
+        lua_writestring("setCameraPosition:\n  Arguments:\n    x [number],\b    y [number],\n    z[number]\n  Set the position of the camera.\n");
+        return 0;
+    };
     int args = lua_gettop(lua);
     if (args != 3)
     {
@@ -68,6 +78,11 @@ inline int Camera::lua_setCameraPosition(lua_State * lua)
  */
 inline int Camera::lua_rotateCamera(lua_State * lua)
 {
+    if (lua_gettop(lua) >= 1 && lua_isstring(lua, 1) && std::string(lua_tostring(lua, 1)) == "help")
+    {
+        lua_writestring("rotateCamera:\n  Arguments:\n    phi [number]\n  Rotate the camera by phi radians.\n");
+        return 0;
+    };
     int args = lua_gettop(lua);
     if (args != 1)
     {
@@ -93,6 +108,11 @@ inline int Camera::lua_rotateCamera(lua_State * lua)
  */
 inline int Camera::lua_zoomCamera(lua_State * lua)
 {
+    if (lua_gettop(lua) >= 1 && lua_isstring(lua, 1) && std::string(lua_tostring(lua, 1)) == "help")
+    {
+        lua_writestring("zoomCamera:\n  Arguments:\n    r [number]\n  Zoom the camera.\n");
+        return 0;
+    };
     int args = lua_gettop(lua);
     if (args != 1)
     {
@@ -118,6 +138,11 @@ inline int Camera::lua_zoomCamera(lua_State * lua)
  */
 inline int Camera::lua_inclineCamera(lua_State * lua)
 {
+    if (lua_gettop(lua) >= 1 && lua_isstring(lua, 1) && std::string(lua_tostring(lua, 1)) == "help")
+    {
+        lua_writestring("inclineCamera:\n  Arguments:\n    theta [number]\n  Incline the camera by theta radians.\n");
+        return 0;
+    };
     int args = lua_gettop(lua);
     if (args != 1)
     {
@@ -143,6 +168,11 @@ inline int Camera::lua_inclineCamera(lua_State * lua)
  */
 inline int Camera::lua_setCameraFieldOfView(lua_State * lua)
 {
+    if (lua_gettop(lua) >= 1 && lua_isstring(lua, 1) && std::string(lua_tostring(lua, 1)) == "help")
+    {
+        lua_writestring("setCameraFieldOfView:\n  Arguments:\n    fov [number]\n  Set the camera's fov in degrees.\n");
+        return 0;
+    };
     int args = lua_gettop(lua);
     if (args != 1)
     {
@@ -160,7 +190,7 @@ inline int Camera::lua_setCameraFieldOfView(lua_State * lua)
 }
 
 /**
- * @brief Set the field of view.
+ * @brief Get the field of view.
  *
  * @remark Lua arguments are:
  * @param lua the Lua context.
@@ -168,6 +198,11 @@ inline int Camera::lua_setCameraFieldOfView(lua_State * lua)
  */
 inline int Camera::lua_getCameraFieldOfView(lua_State * lua)
 {
+    if (lua_gettop(lua) >= 1 && lua_isstring(lua, 1) && std::string(lua_tostring(lua, 1)) == "help")
+    {
+        lua_writestring("getCameraFieldOfView:\n  Arguments: none\n  Get the camera's fov in degrees.\n");
+        return 0;
+    };
     lua_pushnumber(lua, fieldOfView);
     return 1;
 }
diff --git a/include/luaBindings/visualisationState/atoms.h b/include/luaBindings/visualisationState/atoms.h
index 862a94f..0021d94 100644
--- a/include/luaBindings/visualisationState/atoms.h
+++ b/include/luaBindings/visualisationState/atoms.h
@@ -24,6 +24,11 @@
 inline int VisualisationState::lua_setAtomColour(lua_State * lua)
 {
     int args = lua_gettop(lua);
+    if (lua_gettop(lua) >= 1 && lua_isstring(lua, 1) && std::string(lua_tostring(lua, 1)) == "help")
+    {
+        lua_writestring("setAtomColour:\n  Arguments:\n    i [number]\n    r [number]\n    g [nummber]\n    b [number]\n    a [number]\n  Set atom i's colour.\n");
+        return 0;
+    };
     if (args < 4 || args > 5)
     {
         const std::string msg = "setAtomColour expects an atom index and RGB or RGBA arguments.\n";
@@ -72,6 +77,11 @@ inline int VisualisationState::lua_setAtomColour(lua_State * lua)
 inline int VisualisationState::lua_getAtomColour(lua_State * lua)
 {
     int args = lua_gettop(lua);
+    if (lua_gettop(lua) >= 1 && lua_isstring(lua, 1) && std::string(lua_tostring(lua, 1)) == "help")
+    {
+        lua_writestring("setAtomColour:\n  Arguments: none\n  Get atom i's colour.\n");
+        return 0;
+    };
     if (args != 1)
     {
         const std::string msg = "getAtomColour expects an atom index as argument.\n";
@@ -114,6 +124,11 @@ inline int VisualisationState::lua_getAtomColour(lua_State * lua)
  */
 inline int VisualisationState::lua_atomCount(lua_State * lua)
 {
+    if (lua_gettop(lua) >= 1 && lua_isstring(lua, 1) && std::string(lua_tostring(lua, 1)) == "help")
+    {
+        lua_writestring("atomCount:\n  Arguments: none\n  Get number of atoms.\n");
+        return 0;
+    };
     lua_pushinteger(lua, atomCount);
     return 1;
 }
@@ -131,6 +146,11 @@ inline int VisualisationState::lua_atomCount(lua_State * lua)
 inline int VisualisationState::lua_getAtomsNeighbours(lua_State * lua)
 {
     int args = lua_gettop(lua);
+    if (lua_gettop(lua) >= 1 && lua_isstring(lua, 1) && std::string(lua_tostring(lua, 1)) == "help")
+    {
+        lua_writestring("setAtomColour:\n  Arguments:\n    i [number]\n    cutoff [number]\n  Get atom i's neighbours within cutoff.\n");
+        return 0;
+    };
     if (args < 2)
     {
         const std::string msg = "getAtomsNeighbours expects an atom index and cutoff distance as argument.\n";
@@ -187,6 +207,11 @@ inline int VisualisationState::lua_getAtomsNeighbours(lua_State * lua)
 inline int VisualisationState::lua_getAtom(lua_State * lua)
 {
     int args = lua_gettop(lua);
+    if (lua_gettop(lua) >= 1 && lua_isstring(lua, 1) && std::string(lua_tostring(lua, 1)) == "help")
+    {
+        lua_writestring("getAtom:\n  Arguments: \n    i [number]\n  Get atom i's state.\n");
+        return 0;
+    };
     if (args != 1)
     {
         const std::string msg = "getAtom expects an atom index as argument.\n";
@@ -264,6 +289,11 @@ inline int VisualisationState::lua_getAtom(lua_State * lua)
 inline int VisualisationState::lua_getAtomsBonds(lua_State * lua)
 {
     int args = lua_gettop(lua);
+    if (lua_gettop(lua) >= 1 && lua_isstring(lua, 1) && std::string(lua_tostring(lua, 1)) == "help")
+    {
+        lua_writestring("getAtomsBonds:\n  Arguments:\n    i [number]\n  Get atom i's bonds.\n");
+        return 0;
+    };
     if (args != 1)
     {
         const std::string msg = "getAtomsBonds expects an atom index as argument.\n";
diff --git a/include/luaBindings/visualisationState/bonds.h b/include/luaBindings/visualisationState/bonds.h
index 462da24..b108b3d 100644
--- a/include/luaBindings/visualisationState/bonds.h
+++ b/include/luaBindings/visualisationState/bonds.h
@@ -12,6 +12,11 @@
  */
 inline int VisualisationState::lua_bond(lua_State * lua)
 {
+    if (lua_gettop(lua) >= 1 && lua_isstring(lua, 1) && std::string(lua_tostring(lua, 1)) == "help")
+    {
+        lua_writestring("bond:\n  Arguments:\n    i [number]\n    j [number]\n  Bond i and j.\n");
+        return 0;
+    };
     int args = lua_gettop(lua);
     if (args != 2)
     {
@@ -56,6 +61,11 @@ inline int VisualisationState::lua_bond(lua_State * lua)
  */
 inline int VisualisationState::lua_unbond(lua_State * lua)
 {
+    if (lua_gettop(lua) >= 1 && lua_isstring(lua, 1) && std::string(lua_tostring(lua, 1)) == "help")
+    {
+        lua_writestring("unbond:\n  Arguments:\n    i [number]\n    j [number]\n  Unbond i and j.\n");
+        return 0;
+    };
     int args = lua_gettop(lua);
     if (args != 2)
     {
diff --git a/include/luaBindings/visualisationState/utils.h b/include/luaBindings/visualisationState/utils.h
index e721754..037df00 100644
--- a/include/luaBindings/visualisationState/utils.h
+++ b/include/luaBindings/visualisationState/utils.h
@@ -11,6 +11,11 @@
  */
 inline int VisualisationState::lua_setText(lua_State * lua)
 {
+    if (lua_gettop(lua) >= 1 && lua_isstring(lua, 1) && std::string(lua_tostring(lua, 1)) == "help")
+    {
+        lua_writestring("setText:\n  Arguments:\n    message [string]\n  Set the info message.\n");
+        return 0;
+    };
     int args = lua_gettop(lua);
     if (args != 1)
     {
@@ -35,6 +40,11 @@ inline int VisualisationState::lua_setText(lua_State * lua)
  */
 inline int VisualisationState::lua_getFrame(lua_State * lua)
 {
+    if (lua_gettop(lua) >= 1 && lua_isstring(lua, 1) && std::string(lua_tostring(lua, 1)) == "help")
+    {
+        lua_writestring("getFrame:\n  Arguments: none\n  Get the current frame number.");
+        return 0;
+    };
     lua_pushinteger(lua, frame);
     return 1;
 }
diff --git a/include/vendored/lua/src/lauxlib.h b/include/vendored/lua/src/lauxlib.h
index 7fa1a12..cf75d26 100644
--- a/include/vendored/lua/src/lauxlib.h
+++ b/include/vendored/lua/src/lauxlib.h
@@ -258,7 +258,7 @@ typedef struct luaL_Stream {
 
 /* print a string */
 #if !defined(lua_writestring)
-#define lua_writestring(s,l)   (std::cout << s)
+#define lua_writestring(s)   (std::cout << s)
 #endif
 
 /* print a newline and flush the output */
diff --git a/include/vendored/lua/src/lbaselib.cpp b/include/vendored/lua/src/lbaselib.cpp
index 9b5d8c9..09ac950 100644
--- a/include/vendored/lua/src/lbaselib.cpp
+++ b/include/vendored/lua/src/lbaselib.cpp
@@ -27,8 +27,8 @@ static int luaB_print (lua_State *L) {
     size_t l;
     const char *s = luaL_tolstring(L, i, &l);  /* convert it to string */
     if (i > 1)  /* not the first element? */
-      lua_writestring("\t", 1);  /* add a tab before it */
-    lua_writestring(s, l);  /* print it */
+      lua_writestring("\t");  /* add a tab before it */
+    lua_writestring(s);  /* print it */
     lua_pop(L, 1);  /* pop result */
   }
   lua_writeline();