Reduce the size of initial help text.

source/microbit/help.c

@@ -33,40 +33,27 @@
 STATIC const char *help_text =
 "Welcome to MicroPython on the micro:bit!\n"
 "\n"
-"Type 'import microbit', press return and try these commands:\n"
-"  microbit.display.scroll('Hello')\n"
-"  microbit.running_time()\n"
-"  microbit.sleep(1000)\n"
-"  microbit.button_a.is_pressed()\n"
+"Try these commands:\n"
+"  display.scroll('Hello')\n"
+"  running_time()\n"
+"  sleep(1000)\n"
+"  button_a.is_pressed()\n"
 "What do these commands do? Can you improve them? HINT: use the up and down\n"
 "arrow keys to get your command history. Press the TAB key to auto-complete\n"
-"unfinished words (so 'mi' becomes 'microbit' after you press TAB). These\n"
+"unfinished words (so 'di' becomes 'display' after you press TAB). These\n"
 "tricks save a lot of typing and look cool!\n"
 "\n"
 "Explore:\n"
 "Type 'help(something)' to find out about it. Type 'dir(something)' to see what\n"
-"it can do. For goodness sake, don't type 'import this'.\n"
-"\n"
-"Stuff to explore:\n"
-"  microbit.accelerometer         -- detect the device's position (orientation)\n"
-"  microbit.button_a.is_pressed() -- is button A pressed? (True or False)\n"
-"  microbit.button_b.is_pressed() -- is button B pressed? (True or False)\n"
-"  microbit.compass               -- detect the device's heading\n"
-"  microbit.display               -- display things (pixels, characters, words)\n"
-"  microbit.Image                 -- make pictures for the display\n"
-"  microbit.pin0                  -- control the gold input/output (IO) pin0\n"
-"  microbit.panic()               -- enter panic mode (requires a restart)\n"
-"  microbit.random(n)             -- get a random number between 0 and n-1\n"
-"  microbit.reset()               -- reset the device\n"
-"  microbit.sleep(n)              -- wait for n milliseconds (1 second = 1000)\n"
-"  microbit.running_time()        -- get the number of milliseconds since reset\n"
+"it can do. Type 'dir()' to see what stuff is available. For goodness sake,\n"
+"don't type 'import this'.\n"
 "\n"
 "Control commands:\n"
 "  CTRL-C        -- stop a running program\n"
 "  CTRL-D        -- on a blank line, do a soft reset of the micro:bit\n"
 "\n"
-"Available modules: array, collections, microbit, micropython, gc, struct, sys,\n"
-"this\n"
+"Available modules: antigravity, array, collections, gc, love, math,\n"
+"micropython, music, struct, sys, this\n"
 "\n"
 "For more information about Python, visit: http://python.org/\n"
 "To find out about MicroPython, visit: http://micropython.org/\n"