void ProcessLine (string line)
{
if (line == null || line.Length < 6)
return;
int sep = line.IndexOf (": ");
if (sep == -1)
return;
string marker = line.Substring (0, sep);
string target = line.Substring (sep + 2);
ProcessSecurityAttributeEntry (
DecomposeAttributeType (marker),
DecomposeTargetKind (marker),
target);
}