diff --git a/documentation/doxygen/js.dox b/documentation/doxygen/js.dox
index 1c81a0835..f4faf668f 100644
--- a/documentation/doxygen/js.dox
+++ b/documentation/doxygen/js.dox
@@ -12,7 +12,10 @@ JS modules use the Flipper app plugin system. Each module is compiled into a .fa
 
 - @subpage js_badusb - BadUSB module
 - @subpage js_serial - Serial module
+- @subpage js_math - Math module
 - @subpage js_dialog - Dialog module
+- @subpage js_submenu - Submenu module
+- @subpage js_textbox - Textbox module
 - @subpage js_notification - Notifications module
 
 */
diff --git a/documentation/js/js_badusb.md b/documentation/js/js_badusb.md
index 28372e56a..78c49104c 100644
--- a/documentation/js/js_badusb.md
+++ b/documentation/js/js_badusb.md
@@ -111,10 +111,10 @@ badusb.println("Hello, world!");  // print "Hello, world!" and press "ENTER"
 
 | Name          |
 | ------------- |
-| CTRL          |            
-| SHIFT         |  
+| CTRL          |
+| SHIFT         |
 | ALT           |
-| GUI           |          
+| GUI           |
 
 ## Special keys
 
diff --git a/documentation/js/js_dialog.md b/documentation/js/js_dialog.md
index 5804b075e..eb027e6a7 100644
--- a/documentation/js/js_dialog.md
+++ b/documentation/js/js_dialog.md
@@ -13,7 +13,7 @@ Show a simple message dialog with header, text and "OK" button.
 - Dialog header text
 - Dialog text
 
-### Retuns
+### Returns
 true if central button was pressed, false if the dialog was closed by back key press
 
 ### Examples:
@@ -25,14 +25,14 @@ dialog.message("Dialog demo", "Press OK to start");
 More complex dialog with configurable buttons
 
 ### Parameters
-Configuration object with the following fileds:
+Configuration object with the following fields:
 - header: Dialog header text
 - text: Dialog text
 - button_left: (optional) left button name
 - button_right: (optional) right button name
 - button_center: (optional) central button name
 
-### Retuns
+### Returns
 Name of pressed button or empty string if the dialog was closed by back key press
 
 ### Examples:
diff --git a/documentation/js/js_math.md b/documentation/js/js_math.md
new file mode 100644
index 000000000..296f01c62
--- /dev/null
+++ b/documentation/js/js_math.md
@@ -0,0 +1,362 @@
+# js_math {#js_math}
+
+# Math module
+```js
+let math = require("math");
+```
+# Constants
+
+## PI
+The number π = 3.14159265358979323846264338327950288.
+
+## E
+The number e (Euler's number) = 2.71828182845904523536028747135266250.
+
+## EPSILON
+The smallest number that satisfies the condition: 1.0 + EPSILON != 1.0.
+EPSILON = 2.2204460492503131e-16.
+
+# Methods
+
+## abs
+Return the absolute value of a number.
+
+### Parameters
+- x: A number
+
+### Returns
+The absolute value of `x`. If `x` is negative (including -0), returns `-x`. Otherwise, returns `x`. The result is therefore always a positive number or 0.
+
+### Example
+```js
+math.abs(-5); // 5
+```
+
+## acos
+Return the inverse cosine (in radians) of a number.
+
+### Parameters
+- x: A number between -1 and 1, inclusive, representing the angle's cosine value
+
+### Returns
+The inverse cosine (angle in radians between 0 and π, inclusive) of `x`. If `x` is less than -1 or greater than 1, returns `NaN`.
+
+### Example
+```js
+math.acos(-1); // 3.141592653589793
+```
+
+## acosh
+Return the inverse hyperbolic cosine of a number.
+
+### Parameters
+- x: A number greater than or equal to 1
+
+### Returns
+The inverse hyperbolic cosine of `x`.
+
+### Example
+```js
+math.acosh(1); // 0
+```
+
+## asin
+Return the inverse sine (in radians) of a number.
+
+### Parameters
+- x: A number between -1 and 1, inclusive, representing the angle's sine value
+
+### Returns
+The inverse sine (angle in radians between -𝜋/2 and 𝜋/2, inclusive) of `x`.
+
+### Example
+```js
+math.asin(0.5); // 0.5235987755982989
+```
+
+## asinh
+Return the inverse hyperbolic sine of a number.
+
+### Parameters
+- x: A number
+
+### Returns
+The inverse hyperbolic sine of `x`.
+
+### Example
+```js
+math.asinh(1); // 0.881373587019543
+```
+
+## atan
+Return the inverse tangent (in radians) of a number.
+
+### Parameters
+- x: A number
+
+### Returns
+The inverse tangent (angle in radians between -𝜋/2 and 𝜋/2, inclusive) of `x`.
+
+### Example
+```js
+math.atan(1); // 0.7853981633974483
+```
+
+## atan2
+Return the angle in the plane (in radians) between the positive x-axis and the ray from (0, 0) to the point (x, y), for math.atan2(y, x).
+
+### Parameters
+- y: The y coordinate of the point
+- x: The x coordinate of the point
+
+### Returns
+The angle in radians (between -π and π, inclusive) between the positive x-axis and the ray from (0, 0) to the point (x, y).
+
+### Example
+```js
+math.atan2(90, 15); // 1.4056476493802699
+```
+
+## atanh
+The method returns the inverse hyperbolic tangent of a number.
+
+### Parameters
+- x: A number between -1 and 1, inclusive
+
+### Returns
+The inverse hyperbolic tangent of `x`.
+
+### Example
+```js
+math.atanh(0.5); // 0.5493061443340548
+```
+
+## cbrt
+Return the cube root of a number.
+
+### Parameters
+- x: A number
+
+### Returns
+The cube root of `x`.
+
+### Example
+```js
+math.cbrt(2); // 1.2599210498948732
+```
+
+## ceil
+Round up and return the smallest integer greater than or equal to a given number.
+
+### Parameters
+- x: A number
+
+### Returns
+The smallest integer greater than or equal to `x`. It's the same value as `-math.floor(-x)`.
+
+### Example
+```js
+math.ceil(-7.004); // -7
+math.ceil(7.004);  // 8
+```
+
+## clz32
+Return the number of leading zero bits in the 32-bit binary representation of a number.
+
+### Parameters
+- x: A number
+
+### Returns
+The number of leading zero bits in the 32-bit binary representation of `x`.
+
+### Example
+```js
+math.clz32(1);    // 31
+math.clz32(1000); // 22
+```
+
+## cos
+Return the cosine of a number in radians.
+
+### Parameters
+- x: A number representing an angle in radians
+
+### Returns
+The cosine of `x`, between -1 and 1, inclusive.
+
+### Example
+```js
+math.cos(math.PI); // -1
+```
+
+## exp
+Return e raised to the power of a number.
+
+### Parameters
+- x: A number
+
+### Returns
+A nonnegative number representing `e^x`, where `e` is the base of the natural logarithm.
+
+### Example
+```js
+math.exp(0); // 1
+math.exp(1); // 2.718281828459045
+```
+
+## floor
+Round down and return the largest integer less than or equal to a given number.
+
+### Parameters
+- x: A number
+
+### Returns
+The largest integer smaller than or equal to `x`. It's the same value as `-math.ceil(-x)`.
+
+### Example
+```js
+math.floor(-45.95); // -46
+math.floor(-45.05); // -46
+math.floor(-0); // -0
+math.floor(0); // 0
+math.floor(45.05); // 45
+math.floor(45.95); // 45
+```
+
+## is_equal
+Return true if the difference between numbers `a` and `b` is less than the specified parameter `e`.
+
+### Parameters
+- a: A number a
+- b: A number b
+- e: An epsilon parameter
+
+### Returns
+True if the difference between numbers `a` and `b` is less than the specified parameter `e`. Otherwise, false.
+
+### Example
+```js
+math.is_equal(1.4, 1.6, 0.2);      // false
+math.is_equal(3.556, 3.555, 0.01); // true
+```
+
+## max
+Return the largest of two numbers given as input parameters.
+
+### Parameters
+- a: A number a
+- b: A number b
+
+### Returns
+The largest of the given numbers.
+
+### Example
+```js
+math.max(10, 20);   // 20
+math.max(-10, -20); // -10
+```
+
+## min
+Return the smallest of two numbers given as input parameters.
+
+### Parameters
+- a: A number a
+- b: A number b
+
+### Returns
+The smallest of the given numbers.
+
+### Example
+```js
+math.min(10, 20);   // 10
+math.min(-10, -20); // -20
+```
+
+## pow
+Return the value of a base raised to a power.
+
+### Parameters
+- base: The base number
+- exponent: The exponent number
+
+### Returns
+A number representing base taken to the power of exponent.
+
+### Example
+```js
+math.pow(7, 2);  // 49
+math.pow(7, 3);  // 343
+math.pow(2, 10); // 1024
+```
+
+## random
+Return a floating-point, pseudo-random number that's greater than or equal to 0 and less than 1, with approximately uniform distribution over that range - which you can then scale to your desired range.
+
+### Returns
+A floating-point, pseudo-random number between 0 (inclusive) and 1 (exclusive).
+
+### Example
+```js
+let num = math.random();
+```
+
+## sign
+Return 1 or -1, indicating the sign of the number passed as argument.
+
+### Parameters
+- x: A number
+
+### Returns
+-1 if the number is less than 0, and 1 otherwise.
+
+### Example
+```js
+math.sign(3);  // 1
+math.sign(0);  // 1
+math.sign(-3); // -1
+```
+
+## sin
+Return the sine of a number in radians.
+
+### Parameters
+- x: A number representing an angle in radians
+
+### Returns
+The sine of `x`, between -1 and 1, inclusive.
+
+### Example
+```js
+math.sin(math.PI / 2); // 1
+```
+
+## sqrt
+Return the square root of a number.
+
+### Parameters
+- x: A number greater than or equal to 0
+
+### Returns
+The square root of `x`, a nonnegative number. If `x` < 0, script will fail with an error.
+
+### Example
+```js
+math.sqrt(25); // 5
+```
+
+## trunc
+Return the integer part of a number by removing any fractional digits.
+
+### Parameters
+- x: A number
+
+### Returns
+The integer part of `x`.
+
+### Example
+```js
+math.trunc(-1.123); // -1
+math.trunc(0.123);  // 0
+math.trunc(13.37);  // 13
+math.trunc(42.84);  // 42
+```
diff --git a/documentation/js/js_serial.md b/documentation/js/js_serial.md
index cd9993a18..9d7938044 100644
--- a/documentation/js/js_serial.md
+++ b/documentation/js/js_serial.md
@@ -53,7 +53,7 @@ serial.read(10, 5000); // Read 10 bytes, with 5s timeout
 ```
 
 ## readln
-Read from serial port untill line break character
+Read from serial port until line break character
 
 ### Parameters
 (optional) Timeout value in ms
@@ -68,7 +68,7 @@ serial.readln(5000); // Read with 5s timeout
 ```
 
 ## readBytes
-Read from serial port untill line break character
+Read from serial port until line break character
 
 ### Parameters
 - Number of bytes to read
@@ -81,7 +81,7 @@ ArrayBuffer with received data or undefined if nothing was received before timeo
 ```js
 serial.readBytes(4); // Read 4 bytes, without timeout
 
-// Read one byte from receive buffer with zero timeout, returns UNDEFINED if Rx bufer is empty
+// Read one byte from receive buffer with zero timeout, returns UNDEFINED if Rx buffer is empty
 serial.readBytes(1, 0);
 ```
 
diff --git a/documentation/js/js_submenu.md b/documentation/js/js_submenu.md
new file mode 100644
index 000000000..580a43bd5
--- /dev/null
+++ b/documentation/js/js_submenu.md
@@ -0,0 +1,48 @@
+# js_submenu {#js_submenu}
+
+# Submenu module
+```js
+let submenu = require("submenu");
+```
+# Methods
+
+## setHeader
+Set the submenu header text.
+
+### Parameters
+- header (string): The submenu header text
+
+### Example
+```js
+submenu.setHeader("Select an option:");
+```
+
+## addItem
+Add a new submenu item.
+
+### Parameters
+- label (string): The submenu item label text
+- id (number): The submenu item ID, must be a Uint32 number
+
+### Example
+```js
+submenu.addItem("Option 1", 1);
+submenu.addItem("Option 2", 2);
+submenu.addItem("Option 3", 3);
+```
+
+## show
+Show a submenu that was previously configured using `setHeader()` and `addItem()` methods.
+
+### Returns
+The ID of the submenu item that was selected, or `undefined` if the BACK button was pressed.
+
+### Example
+```js
+let selected = submenu.show();
+if (selected === undefined) {
+    // if BACK button was pressed
+} else if (selected === 1) {
+    // if item with ID 1 was selected
+}
+```
diff --git a/documentation/js/js_textbox.md b/documentation/js/js_textbox.md
new file mode 100644
index 000000000..61652df1a
--- /dev/null
+++ b/documentation/js/js_textbox.md
@@ -0,0 +1,69 @@
+# js_textbox {#js_textbox}
+
+# Textbox module
+```js
+let textbox = require("textbox");
+```
+# Methods
+
+## setConfig
+Set focus and font for the textbox.
+
+### Parameters
+- focus: "start" to focus on the beginning of the text, or "end" to focus on the end of the text
+- font: "text" to use the default proportional font, or "hex" to use a monospaced font, which is convenient for aligned array output in HEX
+
+### Example
+```js
+textbox.setConfig("start", "text");
+textbox.addText("Hello world");
+textbox.show();
+```
+
+## addText
+Add text to the end of the textbox.
+
+### Parameters
+- text (string): The text to add to the end of the textbox
+
+### Example
+```js
+textbox.addText("New text 1\nNew text 2");
+```
+
+## clearText
+Clear the textbox.
+
+### Example
+```js
+textbox.clearText();
+```
+
+## isOpen
+Return true if the textbox is open.
+
+### Returns
+True if the textbox is open, false otherwise.
+
+### Example
+```js
+let isOpen = textbox.isOpen();
+```
+
+## show
+Show the textbox. You can add text to it using the `addText()` method before or after calling the `show()` method.
+
+### Example
+```js
+textbox.show();
+```
+
+## close
+Close the textbox.
+
+### Example
+```js
+if (textbox.isOpen()) {
+    textbox.close();
+}
+```