diff --git a/libs/base/_locales/base-jsdoc-strings.json b/libs/base/_locales/base-jsdoc-strings.json
index 110fe87e..c1e29892 100644
--- a/libs/base/_locales/base-jsdoc-strings.json
+++ b/libs/base/_locales/base-jsdoc-strings.json
@@ -151,6 +151,6 @@
   "serial.writeNumber": "Write a number to the serial port.",
   "serial.writeString": "Write some text to the serial port.",
   "serial.writeValue": "Write a name:value pair as a line of text to the serial port.",
-  "serial.writeValue|param|name": "name of the value stream, eg: x",
+  "serial.writeValue|param|name": "name of the value stream, eg: \"x\"",
   "serial.writeValue|param|value": "to write"
 }
\ No newline at end of file
diff --git a/libs/base/_locales/base-strings.json b/libs/base/_locales/base-strings.json
index 8697e476..6df21f59 100644
--- a/libs/base/_locales/base-strings.json
+++ b/libs/base/_locales/base-strings.json
@@ -30,7 +30,7 @@
   "control.waitMicros|block": "wait (µs)%micros",
   "control|block": "control",
   "loops.forever|block": "forever",
-  "loops.pause|block": "pause %ms=timePicker|ms",
+  "loops.pause|block": "pause %pause=timePicker|ms",
   "loops.timePicker|block": "%ms",
   "loops|block": "loops",
   "parseInt|block": "parse to integer %text",
diff --git a/libs/base/shims.d.ts b/libs/base/shims.d.ts
index 1d86fdb2..9de0837e 100644
--- a/libs/base/shims.d.ts
+++ b/libs/base/shims.d.ts
@@ -79,7 +79,7 @@ declare namespace loops {
      * @param ms how long to pause for, eg: 100, 200, 500, 1000, 2000
      */
     //% help=loops/pause weight=99
-    //% async block="pause %ms=timePicker|ms"
+    //% async block="pause %pause=timePicker|ms"
     //% blockId=device_pause shim=loops::pause
     function pause(ms: int32): void;
 }
@@ -99,8 +99,8 @@ declare namespace control {
      */
     //% weight=20 blockGap=8 blockId="control_on_event" block="on event|from %src|with value %value"
     //% blockExternalInputs=1
-    //% help="control/on-event" shim=control::onEvent
-    function onEvent(src: int32, value: int32, handler: () => void): void;
+    //% help="control/on-event" flags.defl=16 shim=control::onEvent
+    function onEvent(src: int32, value: int32, handler: () => void, flags?: int32): void;
 
     /**
      * Reset the device.
@@ -144,14 +144,14 @@ declare namespace serial {
      * Write some text to the serial port.
      */
     //% help=serial/write-string
-    //% weight=87
+    //% weight=87 blockHidden=true
     //% blockId=serial_writestring block="serial|write string %text" shim=serial::writeString
     function writeString(text: string): void;
 
     /**
      * Send a buffer across the serial connection.
      */
-    //% help=serial/write-buffer weight=6
+    //% help=serial/write-buffer weight=6 blockHidden=true
     //% blockId=serial_writebuffer block="serial|write buffer %buffer" shim=serial::writeBuffer
     function writeBuffer(buffer: Buffer): void;
 }
diff --git a/libs/core/linux.cpp b/libs/core/linux.cpp
index ac40c270..52eb0982 100644
--- a/libs/core/linux.cpp
+++ b/libs/core/linux.cpp
@@ -352,7 +352,8 @@ void raiseEvent(int id, int event) {
     pthread_mutex_unlock(&eventMutex);
 }
 
-void registerWithDal(int id, int event, Action a) {
+void registerWithDal(int id, int event, Action a, int flags) {
+    // TODO support flags
     setBinding(id, event, a);
 }