I have seen numerous posts on how to do threads in Palm OS.  The official 
answer has been, "you can't".  But I have seen an unsupported way to do it 
using the sysAppLaunchFlagNewThread with a SysAppLaunch() call from:

http://flippinbits.com/twiki/bin/view/FAQ/HowDoICreateAThread 

I have tested this and successfully run an app in the background as a thread.  
I can launch other apps and the original app is still running.  My app does not 
use any global or static variables.

Now I know there have been strong warning against this technique as it is not 
officially supported by the OS but it has worked reliably for me.  I am 
wondering what the exact issues/dangers are with doing this?
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