fix broken links

docs/reference/images/pixel.md

@@ -21,7 +21,7 @@ To figure out the ``x``, ``y`` coordinates, see [LED screen](/device/screen).
 
 ### Returns
 
-* [Boolean](/reference/types/boolean) - `true` for on and `false` for off
+* [Boolean](/blocks/logic/boolean) - `true` for on and `false` for off
 
 ### Example
 

docs/reference/images/set-pixel.md

@@ -14,7 +14,7 @@ export function setPixel(_this: micro_bit.Image, x: number, y: number, value: bo
 
 * x - [Number](/reference/types/number); the *x coordinate* or horizontal position of a pixel in an [image](/reference/images/image)
 * x - [Number](/reference/types/number); the *y coordinate* or vertical position of a pixel in an [image](/reference/images/image)
-* value -[Boolean](/reference/types/boolean); the on/off state of a pixel; `true` for on, `false` for off
+* value -[Boolean](/blocks/logic/boolean); the on/off state of a pixel; `true` for on, `false` for off
 
 ### x, y coordinates?
 

docs/reference/input/button-is-pressed.md

@@ -12,7 +12,7 @@ input.buttonIsPressed(Button.A);
 
 ### Returns
 
-* [Boolean](/reference/types/boolean) that is `true` if the button you are checking is pressed, `false` if it is not pressed.
+* [Boolean](/blocks/logic/boolean) that is `true` if the button you are checking is pressed, `false` if it is not pressed.
 
 ### Example
 

docs/reference/input/pin-is-pressed.md

@@ -23,7 +23,7 @@ instead of the USB cable.
 
 ### returns
 
-* a [boolean](/reference/types/boolean) that means whether the pin you say is pressed (`true` or `false`)
+* a [boolean](/blocks/logic/boolean) that means whether the pin you say is pressed (`true` or `false`)
 
 ### Example
 

docs/reference/led/point.md

@@ -17,7 +17,7 @@ other than 0 to 4), this function will return `false`.
 
 ### Returns
 
-* a [boolean](/reference/types/boolean). If it is `true`, that means the LED is on. If it is `false`, that means the LED is off.
+* a [boolean](/blocks/logic/boolean). If it is `true`, that means the LED is on. If it is `false`, that means the LED is off.
 
 ### ~hint
 

docs/reference/radio/receive-number.md

@@ -23,7 +23,7 @@ radio.onDataReceived(() => {
 
 ### Example: Light level receiver 
 
-This example shows the light level from the [light level sender example](/reference/input/send-number)
+This example shows the light level from the [light level sender example](/reference/radio/send-number)
 as a number.
 
 ```blocks
@@ -36,7 +36,7 @@ basic.forever(() => {
 
 ### Example: Mailbot
 
-This example receives the light level from the [light level sender example](/reference/input/send-number)
+This example receives the light level from the [light level sender example](/reference/radio/send-number)
 and shows a text string like **ALERT** if the light level becomes much brighter.
 To find when the mail arrives, you can put the light level sender in your mailbox and it will
 tell you when someone opens the box. You can try this with a normal
@@ -58,5 +58,5 @@ basic.forever(() => {
 
 ### See also
 
-[send number](/reference/input/send-number), [on data received](/reference/radio/on-data-received)
+[send number](/reference/radio/send-number), [on data received](/reference/radio/on-data-received)
 

docs/reference/radio/received-signal-strength.md

@@ -20,7 +20,7 @@ This function only works on the micro:bit, not in browsers.
 ### Example
 
 This example shows how strong the radio signal of the
-[light level sender example](/reference/input/send-number) is.
+[light level sender example](/reference/radio/send-number) is.
 
 ```blocks
 let x = 0;

docs/reference/types/number.md

@@ -27,7 +27,7 @@ The following arithmetic operators work on numbers and return a [Number](/refere
 
 ### Relational operators
 
-The following relational operators work on numbers and return a [Boolean](/reference/types/boolean):
+The following relational operators work on numbers and return a [Boolean](/blocks/logic/boolean):
 
 * equality: `(3 + 1) = 4`
 * inequality: `3 != 4`
@@ -67,5 +67,5 @@ basic.showNumber(abs);
 
 ### See also
 
-[math](/blocks/math), [var](/blocks/variables/var), [Boolean](/reference/types/boolean), [show number](/reference/basic/show-number)
+[math](/blocks/math), [var](/blocks/variables/var), [Boolean](/blocks/logic/boolean), [show number](/reference/basic/show-number)
 

docs/reference/types/string-functions.md

@@ -0,0 +1,3 @@
+## String functions
+
+TBD