FYI LibreOffice Draw allows you to open, edit and digitally sign PDF files
I see the question asked a lot in Linux groups, so I hope this bit of knowledge may help someone here.
There have been multiple accounts created with the sole purpose of posting advertisement posts or replies containing unsolicited advertising.
Accounts which solely post advertisements, or persistently post them may be terminated.
I see the question asked a lot in Linux groups, so I hope this bit of knowledge may help someone here.