Change events can send a CHANGED_REGION_START bit. This is not implemented in lsl Editor 3.0 or earlier
The integer constant CHANGED_REGION_START has the value 0x400
http://wiki.secondlife.com/wiki/CHANGED_REGION_START
When using http-in to get a URL, the changed region flag indicates the sim has rebooted, and HTTP-in servers must request a new URL
repro:
key requestURL;
default
{
changed(integer what)
{
if (what & CHANGED_REGION_START)
requestURL= llRequestURL();
}
}
fails with : The name 'CHANGED_REGION_START' does not exist in the current context