I miss the equivalent of the menu -> Script -> References... dialog in 9.
What is needed to add an external vb.NET DLL for use in a Mfd9 script?
Do you really want to ruin economy only to save the planet?
Use the $reference syntax within a header comment.
It's language-neutral except for the character(s) required to make the comment.
E.g. for VB.NET
'$reference: System.Windows.Forms.dll
This is the solution. Thx Tim