Hi all,

I'm playing around with PB2022's new PDF tools.  I wrote a small window that just checks the PDF standard of a given file name. 

So far, all files are PDF_None! except one, that's unknown.  Here's the code I use to check the standard:

CHOOSE CASE lpdf_getstandard
	CASE PDF_None!
		st_pdf_std.text = "PDF_None!"
	CASE PDFA_1a!
		st_pdf_std.text = "PDFA_1A!"
	CASE 	PDFA_1b!
		st_pdf_std.text = "PDFA_1b!"
	CASE PDFA_3a!
		st_pdf_std.text = "PDFA_3a!"
	CASE PDFA_3b!
		st_pdf_std.text = "PDFA_3b!"
	CASE PDFA_3u!
		st_pdf_std.text = "PDF_3u!"
	CASE ELSE
		st_pdf_std.text = "PDF Standard Unknown"
END CHOOSE

The unknown standard is from the Welcome to Adobe Acrobat file for the version installed on my new computer, Adobe Acrobat Standard 2020.

I'm wondering if I can merge PDF files with different, or unknown standards? 

TIA,

~~~Tracy