various docs updates
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@ -9,8 +9,9 @@ basic.showNumber(0);
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input.onButtonPressed(Button.A, () => {
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});
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led.plot(0, 0);
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music.playTone(0, 0);
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led.plot(0, 0);
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radio.sendNumber(0);
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game.addScore(1);
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images.createImage(`
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. . . . .
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@ -1,39 +1,9 @@
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# Logic
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[if](/reference/logic/if)
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```blocks
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if(true) {
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}
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```
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[Boolean](/reference/types/boolean) values: *true*; *false*
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```blocks
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true
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false
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```
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Boolean binary operators: *and* (conjunction); *or* (disjunction)
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```blocks
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```cards
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if(true) {}
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true;
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true && false;
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true || false;
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```
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Boolean negation operator
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```blocks
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!true
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```
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Comparison operators (=, !=, <, >, <=, >=)
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```blocks
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0 == 0;
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1 !- 0;
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0 < 1;
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1 > 0;
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0 <= 1;
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1 >= 0;
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!true;
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1 != 0;
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```
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@ -1,23 +1,26 @@
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# If
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Run code based on a condition.
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### @parent blocks/language
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Conditionally run code depending on whether a [Boolean](/reference/types/boolean) condition is true or false.
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### Block Editor
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![](/static/mb/hourofcode-0.png)
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```blocks
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if(true) {
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}
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```
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In the Block Editor, click on the dark blue gear icon (see above) to add an *else* or *if* to the current block.
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### Example: adjusting screen brightness
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![](/static/mb/blocks/game-library/pic0.png)
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```blocks
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if(input.lightLevel()<100){
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led.setBrightness(255);
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}
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```
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If the screen [brightness](/reference/led/brightness) is `< 100`, this code sets the brightness to `255`:
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If the [light level](/input/light-level) is `< 100`, this code sets the brightness to `255`:
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### Lessons
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@ -1,26 +1,8 @@
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# Loops
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Repeat code.
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[for](/reference/loops/for)
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```blocks
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```cards
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for(let i = 0;i<5;i++) {}
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```
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[repeat](/reference/loops/repeat)
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![](/static/mb/blocks/contents-0.png)
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[while](/reference/loops/while)
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```blocks
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for(let i = 1;i<5;i++) {}
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while(true) {}
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```
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[forever](/reference/basic/forever)
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```blocks
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basic.forever(() => {})
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```
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@ -1,15 +1,13 @@
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# For
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Repeat code a preset number of times.
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### @parent blocks/language
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Repeat code a fixed number of times.
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### Block Editor
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![](/static/mb/events-0.png)
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```blocks
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for(let i = 0; i < 5; ++i) {
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}
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```
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The Block Editor *for* loop is different than the Touch Develop *for* loop in an important way. The above for loop will iterate *five* times, with the loop variable *i* taking on values 0, 1, 2, 3, and 4. The Touch Develop for loop shown below will iterate four times:
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@ -2,8 +2,6 @@
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Repeat code a preset number of times.
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Repeat code a fixed number of times.
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### Block Editor
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![](/static/mb/blocks/contents-0.png)
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@ -1,23 +1,14 @@
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# While
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Repeat code in a loop while a condition is true.
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### @parent blocks/language
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Repeat code while a [Boolean](/reference/types/boolean) `condition` is true.
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### ~hide
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```blocks
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while(true) {
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}
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```
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let condition = false
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```
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### ~
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### Block Editor
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![](/static/mb/string-0.png)
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The while loop has a *condition* that evaluates to a [Boolean](/reference/types/boolean) value. After the `do` keyword, add the code that you want to run while the `condition` is `true`. The while loop concludes with `end while`.
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@ -27,11 +18,13 @@ The condition is tested before any code runs. Which means that if the condition
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The following example uses a while loop to make a diagonal line on the LED screen (points `0, 0`, `1, 1`, `2, 2`, `3, 3`, `4, 4`).
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// index is set to 4
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![](/static/mb/blocks/var-10.png)
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// subtract 1 from `index` each time through loop
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```blocks
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let index = 4;
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while(index >= 0) {
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led.plot(index, index);
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index--;
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}
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```
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### Lessons
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@ -16,5 +16,5 @@ radio.receivedSignalStrength();
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radio.setGroup(0);
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radio.setTransmitPower(0);
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radio.writeValueToSerial();
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radio.setTransmitSerialNumber(◊);
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radio.setTransmitSerialNumber(true);
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```
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@ -3,6 +3,9 @@
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Reading and writing data over a serial connection.
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```cards
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serial.writeValue(x, 0);
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serial.writeLine("");
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serial.writeNumber(0);
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serial.writeValue(x, 0);
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serial.writeString("");
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serial.readLine();
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```
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"radio.setTransmitSerialNumber": "Set the radio to transmit the serial number in each message.",
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"radio.writeValueToSerial": "Reads a value sent with `stream value` and writes it\nto the serial stream as JSON",
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"serial": "Reading and writing data over a serial connection.",
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"serial.readLine": "Reads a line of text from the serial port.",
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"serial.writeLine": "Prints a line of text to the serial",
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"serial.writeNumber": "Prints a numeric value to the serial",
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"serial.writeString": "Sends a piece of text through Serial connection.",
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"serial.writeValue": "Writes a ``name: value`` pair line to the serial."
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}
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