Mark funktion dont work

Hello Mr.u,

We're sorry for the trouble, would you mind sharing more details about the issue you are experiencing? Which tool are you using to mark the texts in the PDF file?

Is it possible to post a screenshot? Please refer to the help article to post a screenshot https://forums.adobe.com/docs/DOC-7043#jive_content_id_How_do_I_attach_a_screenshot

Are you on a Mac or Windows machine and what is the version?

What is the verison of Adobe Reader installed? To identify, please take help from the article Identify the product and its version for Acrobat and Reader DC

We're here to help, just need more info.

Thanks,

Anand Sri.