I recommend that you use nsRecord
I think that convertToString uses many memory, when you use EDItemplate.
In my experience, hang happened in my PC when I used convertToString using EDItemplate.
But, this operation ran well in our company system, though it took a long time.
PC : Windows pentium III 755MHz 512 RAM
company sysmtem : IBM AIX 600MHz 1024*2 RAM
Two systems have wide difference.
If you use system like my PC, I recommend that you will use nsRecord.
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