QUESTION
How does my document get its filename and how can I change the default?
ANSWER
The default document filename is the crystal reports document Title, followed by a hyphen, then the transaction number / reference.
For example, in Jiwa Demo, print the invoice report from the sales order entry form to screen.
Click the Export Report button from the report menu ribbon.
A File Explorer dialog will open to select the path and file name of the pdf.
The default filename is "Invoice - (sales order number)".
The "Invoice" part of the filename comes from the Document Properties in Crystal Reports.
If you want to change this behaviour, for example by appending more information like the snapshot number, then this would need to be done by a custom plugin.