diff --git a/src/scripts/default-nodes/find-selected-default-node.lua b/src/scripts/default-nodes/find-selected-default-node.lua
index bee2410b..c3df754d 100644
--- a/src/scripts/default-nodes/find-selected-default-node.lua
+++ b/src/scripts/default-nodes/find-selected-default-node.lua
@@ -4,8 +4,12 @@
 --
 -- SPDX-License-Identifier: MIT
 
--- hook to make sure the user prefered device(default.configured.*) is higher
--- priority.
+-- hook to make sure the user prefered device(default.configured.*) in other
+-- words currently selected device is given higher priority
+
+-- state-default-nodes.lua also does find out the default node out of the user
+-- preferences(current and past), however it doesnt give any higher priority to
+-- the currently selected device.
 
 log = Log.open_topic ("s-default-nodes")
 
diff --git a/src/scripts/default-nodes/rescan.lua b/src/scripts/default-nodes/rescan.lua
index 0da3e496..5d51d74e 100644
--- a/src/scripts/default-nodes/rescan.lua
+++ b/src/scripts/default-nodes/rescan.lua
@@ -4,8 +4,13 @@
 --
 -- SPDX-License-Identifier: MIT
 
+-- looks for changes in user-preferences and devices added/removed and schedules
+-- rescan and pushes "select-default-node" event for each of the media_classes
+
 log = Log.open_topic ("s-default-nodes")
 
+-- looks for changes in user-preferences and devices added/removed and schedules
+-- rescan
 SimpleEventHook {
   name = "default-nodes/rescan-trigger",
   interests = {
@@ -33,6 +38,7 @@ SimpleEventHook {
   end
 }:register ()
 
+-- pushes "select-default-node" event for each of the media_classes
 SimpleEventHook {
   name = "default-nodes/rescan",
   interests = {
diff --git a/src/scripts/default-nodes/state-default-nodes.lua b/src/scripts/default-nodes/state-default-nodes.lua
index 6abae56a..f0c4fd33 100644
--- a/src/scripts/default-nodes/state-default-nodes.lua
+++ b/src/scripts/default-nodes/state-default-nodes.lua
@@ -4,6 +4,12 @@
 --
 -- SPDX-License-Identifier: MIT
 
+-- the script states the default nodes from the user preferences, it has hooks
+-- which stores the user preferences(it stores not just the current preference
+-- but all the previous preferences) in to the state file, retrives them from
+-- state file during the bootup, finally it has a hook which finds a default
+-- node out of the user preferences
+
 cutils = require ("common-utils")
 config = require ("device-config")
 log = Log.open_topic ("s-default-nodes")
diff --git a/src/scripts/device/apply-profile.lua b/src/scripts/device/apply-profile.lua
index 56f3fd49..ea847d68 100644
--- a/src/scripts/device/apply-profile.lua
+++ b/src/scripts/device/apply-profile.lua
@@ -4,6 +4,8 @@
 --
 -- SPDX-License-Identifier: MIT
 
+-- apply the selected profile to the device
+
 cutils = require ("common-utils")
 log = Log.open_topic ("s-device")
 
diff --git a/src/scripts/device/select-profile.lua b/src/scripts/device/select-profile.lua
index 412b7c79..da870aeb 100644
--- a/src/scripts/device/select-profile.lua
+++ b/src/scripts/device/select-profile.lua
@@ -4,6 +4,8 @@
 --
 -- SPDX-License-Identifier: MIT
 
+-- look for new devices and raise select-profile event.
+
 cutils = require ("common-utils")
 log = Log.open_topic ("s-device")
 
diff --git a/src/scripts/device/select-routes.lua b/src/scripts/device/select-routes.lua
index 6fd35608..4538cb22 100644
--- a/src/scripts/device/select-routes.lua
+++ b/src/scripts/device/select-routes.lua
@@ -8,9 +8,9 @@
 --
 -- SPDX-License-Identifier: MIT
 --
--- Update the device info cache with the latest information from EnumRoute
--- and trigger a "select-routes" event to select new routes for the
--- given device configuration, if it has changed
+-- Update the device info cache with the latest information from EnumRoute(all
+-- the device routes) and trigger a "select-routes" event to select new routes
+-- for the given device configuration, if it has changed
 
 cutils = require ("common-utils")
 config = require ("device-config")
diff --git a/src/scripts/device/state-profile.lua b/src/scripts/device/state-profile.lua
index 3357f441..d162b062 100644
--- a/src/scripts/device/state-profile.lua
+++ b/src/scripts/device/state-profile.lua
@@ -7,6 +7,10 @@
 -- This file contains all the logic related to saving device profiles
 -- to a state file and restoring them later on.
 
+-- A devices profile needs to be selected for any new device. the script selects
+-- the device profile from the user preferences, as well as store the user
+-- selected device profile to state file
+
 cutils = require ("common-utils")
 config = require ("device-config")
 log = Log.open_topic ("s-device")
diff --git a/src/scripts/node/create-virtual-item.lua b/src/scripts/node/create-virtual-item.lua
index 96410246..daff2216 100644
--- a/src/scripts/node/create-virtual-item.lua
+++ b/src/scripts/node/create-virtual-item.lua
@@ -7,6 +7,8 @@
 
 -- Receive script arguments from config.lua
 
+-- creates the virtual items defined in the JSON(virtual.conf)
+
 log = Log.open_topic ("s-node")
 
 local defaults = {}