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PDF macros case sensitivity


From: Michał Kruszewski
Subject: PDF macros case sensitivity
Date: Tue, 14 Nov 2023 09:12:55 +0000

There is one thing about PDF macros I struggle to understand, namely the case 
sensitivity.

Example:
.PDFPIC is uppercase
.pdfhref is lowercase

What is more, when the user types .PDFHREF, there is no warning or error.
The link is simply missing in the generated pdf output.

Why are some PDF macros uppercase and some lowercase?
How do I know where to look for all PDF macros documentation?

Best regards,
Michał Kruszewski

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