diff --git a/features/FEATURE_COMMON_PAL/nanostack-hal-mbed-cmsis-rtos/mbed_lib.json b/features/FEATURE_COMMON_PAL/nanostack-hal-mbed-cmsis-rtos/mbed_lib.json
index 408bb7627f..091fa46ae6 100644
--- a/features/FEATURE_COMMON_PAL/nanostack-hal-mbed-cmsis-rtos/mbed_lib.json
+++ b/features/FEATURE_COMMON_PAL/nanostack-hal-mbed-cmsis-rtos/mbed_lib.json
@@ -6,7 +6,7 @@
             "value": false
         },
         "event_loop_thread_stack_size": {
-            "help": "Define event-loop thread stack size.",
+            "help": "Define event-loop thread stack size. [bytes]",
             "value": 6144
         },
         "critical-section-usable-from-interrupt": {
diff --git a/features/nanostack/FEATURE_NANOSTACK/mbed-mesh-api/mbed_lib.json b/features/nanostack/FEATURE_NANOSTACK/mbed-mesh-api/mbed_lib.json
index 5ccb713378..a209ef14a9 100644
--- a/features/nanostack/FEATURE_NANOSTACK/mbed-mesh-api/mbed_lib.json
+++ b/features/nanostack/FEATURE_NANOSTACK/mbed-mesh-api/mbed_lib.json
@@ -2,15 +2,15 @@
     "name": "mbed-mesh-api",
     "config": {
         "heap-size": {
-            "help": "Nanostack's heap size (bytes: 0-65534)",
+            "help": "Nanostack's heap size [bytes: 0-65534]",
             "value": 32500
         },
         "use-malloc-for-heap": {
-            "help": "Use `malloc()` for reserving the internal heap.",
+            "help": "Use `malloc()` for reserving the Nanostack's internal heap.",
             "value": false
         },
         "6lowpan-nd-channel-mask": {
-            "help": "Channel mask, bit mask of channels to use.",
+            "help": "Channel mask, bit-mask of channels to use. [0-0x07fff800]",
             "value": "0x7fff800"
         },
         "6lowpan-nd-channel-page": {
@@ -18,11 +18,11 @@
             "value": 0
         },
         "6lowpan-nd-channel": {
-            "help": "RF channel to use when `channel_mask` is not defined (0-26).",
+            "help": "RF channel to use when `channel_mask` is not defined. [0-26].",
             "value": 0
         },
         "6lowpan-nd-panid-filter": {
-            "help": "Beacon PAN ID filter, 0xffff means no filtering.",
+            "help": "Beacon PAN ID filter, 0xffff means no filtering. [0-0xffff]",
             "value": "0xffff"
         },
         "6lowpan-nd-security-mode": {
@@ -34,7 +34,7 @@
             "value": 1
         },
         "6lowpan-nd-psk-key": {
-            "help": "Pre-shared network key.",
+            "help": "Pre-shared network key. Byte array of 16 bytes. In form of: {0x00, 0x11, ... 0xff}",
             "value": "{0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7, 0xa8, 0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf}"
         },
         "6lowpan-nd-sec-level": {
@@ -54,7 +54,7 @@
             "value": true
         },
         "thread-config-channel-mask": {
-            "help": "Channel mask, 0x7ffff800 scans all channels.",
+            "help": "Channel bit mask, 0x7ffff800 scans all channels. [0-0x07fff800]",
             "value": "0x7fff800"
         },
         "thread-config-channel-page": {
@@ -62,15 +62,15 @@
             "value": 0
         },
         "thread-config-channel": {
-            "help": "RF channel to use. (11-26)",
+            "help": "RF channel to use. [11-26]",
             "value": 22
         },
         "thread-config-panid": {
-            "help": "Network identifier (0-0xFFFF)",
+            "help": "Network identifier [0-0xFFFF]",
             "value": "0x0700"
         },
         "thread-config-network-name": {
-            "help": "Network name (max 16 characters)",
+            "help": "Network name [string, max 16 characters]",
             "value": "\"Thread Network\""
         },
         "thread-config-commissioning-dataset-timestamp": {
@@ -78,19 +78,19 @@
             "value": "0x10000"
         },
         "thread-config-extended-panid": {
-            "help": "Extended PAN ID.",
+            "help": "Extended PAN ID. [8 byte array]",
             "value": "{0xf1, 0xb5, 0xa1, 0xb2,0xc4, 0xd5, 0xa1, 0xbd }"
         },
         "thread-master-key": {
-            "help": "Network master key.",
+            "help": "Network master key. [16 byte array]",
             "value": "{0x10, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77, 0x88, 0x99, 0xaa, 0xbb, 0xcc, 0xdd, 0xee, 0xff}"
         },
         "thread-config-ml-prefix": {
-            "help": "Mesh Local prefix.",
+            "help": "Mesh Local prefix. [8 byte array]",
             "value": "{0xfd, 0x0, 0x0d, 0xb8, 0x0, 0x0, 0x0, 0x0}"
         },
         "thread-config-pskc": {
-            "help": "Pre-Shared Key for the Commissioner.",
+            "help": "Pre-Shared Key for the Commissioner. [16 byte array]",
             "value": "{0xc8, 0xa6, 0x2e, 0xae, 0xf3, 0x68, 0xf3, 0x46, 0xa9, 0x9e, 0x57, 0x85, 0x98, 0x9d, 0x1c, 0xd0}"
         },
         "thread-device-type": {
@@ -98,7 +98,7 @@
             "value": "MESH_DEVICE_TYPE_THREAD_ROUTER"
         },
         "thread-security-policy": {
-            "help": "Commissioning security policy bits (0-0xFF)",
+            "help": "Commissioning security policy bits [0-0xFF]",
             "value": 255
         }
     }
diff --git a/features/nanostack/FEATURE_NANOSTACK/sal-stack-nanostack/mbed_lib.json b/features/nanostack/FEATURE_NANOSTACK/sal-stack-nanostack/mbed_lib.json
index ba94bfbc7d..4def941f3a 100644
--- a/features/nanostack/FEATURE_NANOSTACK/sal-stack-nanostack/mbed_lib.json
+++ b/features/nanostack/FEATURE_NANOSTACK/sal-stack-nanostack/mbed_lib.json
@@ -1,7 +1,10 @@
 {
     "name": "nanostack",
     "config": {
-        "configuration": "nanostack_full"
+        "configuration": {
+            "help": "Build time configuration. Refer to Handbook for valid values. Default: full stack",
+            "value": "nanostack_full"
+        }
     },
     "macros": ["NS_USE_EXTERNAL_MBED_TLS"]
 }