Update bootloader documentation to include execution instructions.

Bootloaders/CDC/BootloaderCDC.txt

@@ -57,6 +57,22 @@
  *  \warning <b>THIS BOOTLOADER IS NOT SECURE.</b> Malicious entities can recover written data, even if the device
  *           lockbits are set.
  *
+ *  \section Sec_Running Running the Bootloader
+ *
+ *  This bootloader is designed to be started via the HWB mechanism of the USB AVRs; ground the HWB pin (see device
+ *  datasheet) then momentarily ground /RESET to start the bootloader. This assumes the HWBE fuse is set and the BOOTRST
+ *  fuse is cleared.
+ *
+ *  For board specific exceptions to the above, see below.
+ *
+ *  \subsection SSec_XPLAIN Atmel Xplain Board
+ *  Ground the USB AVR JTAG's \c TCK pin to ground when powering on the board to start the bootloader. This assumes the
+ *  \c HWBE fuse is cleared and the \c BOOTRST fuse is set as the HWBE pin is not user accessible on this board.
+ *
+ *  \subsection SSec_Leonardo Arduino Leonardo Board
+ *  Ground \c IO13 when powering the board to start the bootloader. This assumes the \c HWBE fuse is cleared and the
+ *  \c BOOTRST fuse is set as the HWBE pin is not user accessible on this board.
+ *
  *  \section Sec_Installation Driver Installation
  *
  *  After running this bootloader for the first time on a new computer, you will need to supply the .INF

Bootloaders/DFU/BootloaderDFU.txt

@@ -55,6 +55,22 @@
  *  When the bootloader is running, the board's LED(s) will flash at regular intervals to distinguish the
  *  bootloader from the normal user application.
  *
+ *  \section Sec_Running Running the Bootloader
+ *
+ *  This bootloader is designed to be started via the HWB mechanism of the USB AVRs; ground the HWB pin (see device
+ *  datasheet) then momentarily ground /RESET to start the bootloader. This assumes the HWBE fuse is set and the BOOTRST
+ *  fuse is cleared.
+ *
+ *  For board specific exceptions to the above, see below.
+ *
+ *  \subsection SSec_XPLAIN Atmel Xplain Board
+ *  Ground the USB AVR JTAG's \c TCK pin to ground when powering on the board to start the bootloader. This assumes the
+ *  \c HWBE fuse is cleared and the \c BOOTRST fuse is set as the HWBE pin is not user accessible on this board.
+ *
+ *  \subsection SSec_Leonardo Arduino Leonardo Board
+ *  Ground \c IO13 when powering the board to start the bootloader. This assumes the \c HWBE fuse is cleared and the
+ *  \c BOOTRST fuse is set as the HWBE pin is not user accessible on this board.
+ *
  *  \section Sec_Installation Driver Installation
  *
  *  This bootloader is designed to be compatible with Atmel's provided Windows DFU class drivers. You will need to

Bootloaders/HID/BootloaderHID.txt

@@ -59,6 +59,12 @@
  *  \warning <b>THIS BOOTLOADER IS NOT SECURE.</b> Malicious entities can recover written data, even if the device
  *           lockbits are set.
  *
+ *  \section Sec_Running Running the Bootloader
+ *
+ *  This bootloader is designed to be started via the HWB mechanism of the USB AVRs; ground the HWB pin (see device
+ *  datasheet) then momentarily ground /RESET to start the bootloader. This assumes the HWBE fuse is set and the BOOTRST
+ *  fuse is cleared.
+ *
  *  \section Sec_Installation Driver Installation
  *
  *  This bootloader uses the HID class driver inbuilt into all modern operating systems, thus no additional drivers

Bootloaders/MassStorage/BootloaderMassStorage.txt

@@ -60,6 +60,22 @@
  *  \warning <b>THIS BOOTLOADER IS NOT SECURE.</b> Malicious entities can recover written data, even if the device
  *           lockbits are set.
  *
+ *  \section Sec_Running Running the Bootloader
+ *
+ *  This bootloader is designed to be started via the HWB mechanism of the USB AVRs; ground the HWB pin (see device
+ *  datasheet) then momentarily ground /RESET to start the bootloader. This assumes the HWBE fuse is set and the BOOTRST
+ *  fuse is cleared.
+ *
+ *  For board specific exceptions to the above, see below.
+ *
+ *  \subsection SSec_XPLAIN Atmel Xplain Board
+ *  Ground the USB AVR JTAG's \c TCK pin to ground when powering on the board to start the bootloader. This assumes the
+ *  \c HWBE fuse is cleared and the \c BOOTRST fuse is set as the HWBE pin is not user accessible on this board.
+ *
+ *  \subsection SSec_Leonardo Arduino Leonardo Board
+ *  Ground \c IO13 when powering the board to start the bootloader. This assumes the \c HWBE fuse is cleared and the
+ *  \c BOOTRST fuse is set as the HWBE pin is not user accessible on this board.
+ *
  *  \section Sec_Installation Driver Installation
  *
  *  This bootloader uses the Mass Storage drivers inbuilt into all modern operating systems, thus no additional

Bootloaders/Printer/BootloaderPrinter.txt

@@ -54,6 +54,12 @@
  *  When the bootloader is running, the board's LED(s) will flash at regular intervals to distinguish the
  *  bootloader from the normal user application.
  *
+ *  \section Sec_Running Running the Bootloader
+ *
+ *  This bootloader is designed to be started via the HWB mechanism of the USB AVRs; ground the HWB pin (see device
+ *  datasheet) then momentarily ground /RESET to start the bootloader. This assumes the HWBE fuse is set and the BOOTRST
+ *  fuse is cleared.
+ *
  *  \section Sec_Installation Driver Installation
  *
  *  This bootloader uses the Generic Text-Only printer drivers inbuilt into all modern operating systems, thus no