diff --git a/libs/core/_locales/core-jsdoc-strings.json b/libs/core/_locales/core-jsdoc-strings.json
index 0afa7384..3544b19c 100644
--- a/libs/core/_locales/core-jsdoc-strings.json
+++ b/libs/core/_locales/core-jsdoc-strings.json
@@ -254,7 +254,7 @@
   "serial.delimiters": "Returns the delimiter corresponding string",
   "serial.onDataReceived": "Registers an event to be fired when one of the delimiter is matched.",
   "serial.onDataReceived|param|delimiters": "the characters to match received characters against.",
-  "serial.readBuffer": "Reads multiple characters from the rxBuff and fills a user buffer.",
+  "serial.readBuffer": "Reads multiple characters from the receive buffer and fills a user buffer.",
   "serial.readBuffer|param|length": "default buffer length, eg: 64",
   "serial.readLine": "Reads a line of text from the serial port.",
   "serial.readString": "Reads the buffered received data as a string",
diff --git a/libs/core/_locales/core-strings.json b/libs/core/_locales/core-strings.json
index afeaa547..b99c5445 100644
--- a/libs/core/_locales/core-strings.json
+++ b/libs/core/_locales/core-strings.json
@@ -20,6 +20,14 @@
   "AnalogPin.P7|block": "P7 (write only)",
   "AnalogPin.P8|block": "P8 (write only)",
   "AnalogPin.P9|block": "P9 (write only)",
+  "ArrowNames.East|block": "East",
+  "ArrowNames.NorthEast|block": "North East",
+  "ArrowNames.NorthWest|block": "North West",
+  "ArrowNames.North|block": "North",
+  "ArrowNames.SouthEast|block": "South East",
+  "ArrowNames.SouthWest|block": "South West",
+  "ArrowNames.South|block": "South",
+  "ArrowNames.West|block": "West",
   "BaudRate.BaudRate115200|block": "115200",
   "BaudRate.BaudRate1200|block": "1200",
   "BaudRate.BaudRate14400|block": "14400",
@@ -297,10 +305,12 @@
   "pins|block": "pins",
   "serial.delimiters|block": "%del",
   "serial.onDataReceived|block": "serial|on data received %delimiters=serial_delimiter_conv",
+  "serial.readBuffer|block": "serial|read buffer %length",
   "serial.readLine|block": "serial|read line",
   "serial.readString|block": "serial|read string",
   "serial.readUntil|block": "serial|read until %delimiter=serial_delimiter_conv",
   "serial.redirect|block": "serial|redirect to|TX %tx|RX %rx|at baud rate %rate",
+  "serial.writeBuffer|block": "serial|write buffer %buffer",
   "serial.writeLine|block": "serial|write line %text",
   "serial.writeNumber|block": "serial|write number %value",
   "serial.writeString|block": "serial|write string %text",
diff --git a/libs/core/icons.ts b/libs/core/icons.ts
index 1ade1e9f..ee64d25c 100644
--- a/libs/core/icons.ts
+++ b/libs/core/icons.ts
@@ -149,21 +149,21 @@ enum IconNames {
 }
 
 enum ArrowNames {
-    //% blockIdentity=images.arrowNumber
+    //% blockIdentity=images.arrowNumber block="North"
     North = 0,
-    //% blockIdentity=images.arrowNumber
+    //% blockIdentity=images.arrowNumber block="North East"
     NorthEast,
-    //% blockIdentity=images.arrowNumber
+    //% blockIdentity=images.arrowNumber block="East"
     East,
-    //% blockIdentity=images.arrowNumber
+    //% blockIdentity=images.arrowNumber block="South East"
     SouthEast,
-    //% blockIdentity=images.arrowNumber
+    //% blockIdentity=images.arrowNumber block="South"
     South,
-    //% blockIdentity=images.arrowNumber 
+    //% blockIdentity=images.arrowNumber block="South West"
     SouthWest,
-    //% blockIdentity=images.arrowNumber
+    //% blockIdentity=images.arrowNumber block="West"
     West,
-    //% blockIdentity=images.arrowNumber
+    //% blockIdentity=images.arrowNumber block="North West"
     NorthWest,
 }
 
diff --git a/libs/core/shims.d.ts b/libs/core/shims.d.ts
index 0c68e546..3ee9b121 100644
--- a/libs/core/shims.d.ts
+++ b/libs/core/shims.d.ts
@@ -773,13 +773,15 @@ declare namespace serial {
     /**
      * Sends a buffer through Serial connection
      */
+    //% blockId=serial_writebuffer block="serial|write buffer %buffer"
     //% help=serial/write-buffer advanced=true weight=6 shim=serial::writeBuffer
     function writeBuffer(buffer: Buffer): void;
 
     /**
-     * Reads multiple characters from the rxBuff and fills a user buffer.
+     * Reads multiple characters from the receive buffer and fills a user buffer.
      * @param length default buffer length, eg: 64
      */
+    //% blockId=serial_readbuffer block="serial|read buffer %length"
     //% help=serial/read-buffer advanced=true weight=5 shim=serial::readBuffer
     function readBuffer(length: number): Buffer;