After spending hours looking I found:
"#$NL" is used to force line break in a segment. For example:
this is text content
#$NLbegin a new line
I apologize for the inconvenience you may have experienced.
--------------------------------------------------------------------------------
Tommy Wang
Now my problem is solved! Your documentation does not have this. Please tell me where to find things like this.
Earl
Dear Earl,
Thank you for considering Aspose.
You can find document about the “#$NL” in [Replaceable Symbols](http://www.aspose.com/Products/Aspose.Pdf/Guide/ReplaceableSymbols.html). You can also find other information in the Programmer’s Guide.