Watermarks in the audio file

WaveLab
1

Does adding a text or graphic water mark interfere with the audio. I have read some confusing articles that say that entering a text watermark changed the audio of the file.

Thanks in Advance.

2

Yes, it changes the audio. But this is limited to time, and non-hearable if well done.

3

Thank you PG

4

Are there any video tutorials available on this topic of watermark in Wave Lab 9.5?