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Author: Amanda Butler

docs/reference/runtime/Bootstrap.md

@@ -7,32 +7,31 @@ Mbed OS provides two entry points for developers to hook into:
 - `main(void)` - Default entry point. All the standard application code goes here.
 - `mbed_main(void)` - Executed directly before `main`. The user can define this.
 
-When execution reaches the entry points, a user can expect a fully initialized system that is ready to execute application code. The Mbed OS boot sequence consists of four phases: target setup, toolchain setup, starting the RTOS and starting the Mbed application. These phases can be seen below:
-
-1. Setup target
-     - Configure clocks
-     - Configure watchdog (if applicable)
-     - Turn on RAM (if applicable)
-     - Jump to setup toolchain
-2. Setup toolchain
-     - Initialize RAM
-     - Initialize standard library
-     - Call mbed_init
-         - Vector table copied to RAM
-         - Vendor SDK initialized
-     - jump to start rtos
-3. Start RTOS
-     - Create main thread
-     - Start scheduler
-     - main thread calls start mbed
-4. Start mbed
-     - Call mbed_main
-     - Call main
-
-Sequence diagram of the Mbed 5 boot sequence:
-
-![](boot_sequence.png)
-
+When execution reaches the entry points, a user can expect a fully initialized system that is ready to execute application code. The Mbed OS boot sequence consists of four phases: target setup, toolchain setup, starting the RTOS and starting the Mbed application. You can see these phases below:
+
+1. Set up target.
+   1. Configure clocks.
+   1. Configure watchdog (if applicable).
+   1. Turn on RAM (if applicable).
+   1. Jump to set up toolchain.
+1. Set up toolchain.
+   1. Initialize RAM.
+   1. Initialize standard library.
+   1. Call mbed_init.
+      1. Vector table copied to RAM.
+      1. Vendor SDK initialized.
+      1. Jump to start RTOS.
+1. Start RTOS.
+     1. Create main thread.
+     1. Start scheduler.
+     1. Main thread calls start Mbed.
+1. Start Mbed.
+     1. Call `mbed_main`.
+     1. Call `main`.
+
+Sequence diagram of the boot sequence:
+
+<span class="images">![](https://s3-us-west-2.amazonaws.com/mbed-os-docs-images/boot_sequence.png)<span>A diagram of the Arm Mbed OS 5 boot sequence</span></span>
 
 ### Retargeting