--- a/doc/Loadtools-usage	Wed Jun 19 22:20:24 2019 +0000
+++ b/doc/Loadtools-usage	Wed Jun 19 22:42:25 2019 +0000
@@ -211,6 +211,14 @@
 	process" beacons out the serial port, hoping to catch the Calypso
 	internal boot ROM.  The default is 13 ms.
 
+-j
+
+	This option is specific to fc-xram; it selects the special JTAG mode.
+	In this mode the jump command to start executing the loaded image is
+	skipped and the target is left in loadagent, allowing the developer to
+	connect via JTAG, halt the ARM7 core, set whatever breakpoints or
+	watchpoints are needed and resume at the image start address.
+
 -n
 
 	This option does anything only when loadtools have been compiled to run