Open new editor window with template / header information

This file opens a new window in the editor and prefills it with some template or header information.

On FEX, several header or template solutions are already known. To me, most solutions lack one problem: they copy a template file and open it. This has the side effect, that you either have to define the desired (new) filename first, or need to go via "Save-as" in order to save you work. Both cases are not that handy to use (to me).

In this solution, the function "NewFile_with_Header" simply opens an new window in the editor and fills in the template information. Since there is no copy of a template. this solution is more flexible in sense of saving the file.

Exemplary, the header information is completed by a user name and the current date.