_Singleton's documentation lacks $iFlag's default

[lwc]

I assume it's 0 due to the mention of _Singleton($sOccurenceName [, $iFlag = 0])

But - just like any other command - it should clearly define a default in $iFlag's table row.

[J-Paul Mesnage]

Unless more information is needed, all UDF syntax reflect the default value for a specific parameter.
We don't intend to add (default) in front all the needed one. Too much work for UDF that have been submitted by people as you.
Sorry for not solving this kind of issue.