XnView Software

1) What are Lr-Hierarchical keywords?

I understand your example, but where does Lr stand for? Is this also an option in some panel somewhere?

2) In order for the "Categories" tool to write the keywords in IPTC or XMP format, you must have previously validated the corresponding export options in ...

I have digitalised older photo negatives. I want to add metadata. Since I'm a beginner to XnView, I have several questions about the best way to do this. So, I also posted several other questions. I made different topics for each.

My question now concerns adding personal identifiers/numbers ...

I need more explanation about the following option:

Settings --> Metadata --> Categories and keywords --> Update when the file is externally changed (date/ size)

-What is meant with 'externally changed'? What counts as 'externally changed'?
Please give examples.
Is this, for example: changed on ...

I have digitalised negatives from older photo's. This includes photo's from my parents and grandparents and older familymembers. The original photo's were taken a long time ago. (Long) before 1970.

In a previous topic Michel038 said:

"For dates, use Metadata>Change timestamp screen...
You can ...

Hi Michel,

Thank you for your answer. I had read your tutorial, but the part about keywords and/or categories still was confusing to me.

I want the keywords to be part of the photo, so these will stick to the photo, and still be available when I (or somebody else) uses another program than XnView ...

In the IPTC-IIM/XMP editor I can add keywords and categories. Which one should I use? Or when, or for what?

I have digitalised baby photo's of myself by scanning in old photo negatives. So, it should have keywords or categories like my name, 'baby'.
I also want to add the original date the photo ...