Some questions to the experts

I have observed some things the reason for which I do not understand:

1. What is the purpose of function Main () ?
   • Is it just a wrapper around the initial stuff ?
   • I assume that global definitions must still precede this.
2. Adobe's examples (e.g. SnpCreateDialog) use the form
   • SnpCreateDialog.prototype.run = function() { ...}
   • rather than simply function SnpCreateDialog () { ...}
   • What is the rationale behind this?
3. I have also found a that certain Unicode characters are not allowed in comments of an UTF-8 coded script. In my lengthy script (now > 1000 lines) I needed a regex in the editor to find the culprit: [^\p{L}\p{N}\p{P}\s\$\<\>=+\^]

// goRtfDoc.Close ... // must be postponed to keep the ¶-IDs intact

       This creates the error

Error Message      : Character conversion error
Script, Line#   : H:\Adobe\framemaker.12en\AdobeFrameMaker12\6,  0

     Replacing the symbol ¶ by the word paragraph fixed the error.

    =>  Is there a list of 'unallowed' characters or vice versa a list of allowed characters (also for string constants?).