I'm hoping that someone can help me with this:

For reasons of personal preference, I would like to decrease the space between paragraphs in the $Text field. I found that the correct way to do this is to modify the value of the attribute $ParagraphSpacing, but I'm confused by the way that Tinderbox 6 is behaving.

Q1: I first tried making $ParagraphSpacing a key attribute by clicking the + button in the upper left corner of the Text pane. Sure enough, I can make $ParagraphSpacing appear as a key attribute. When I double clicked its current value, I found that I could change it, but doing so failed to change the display of the text in the pane. Can one change the values of key attributes this way, or are they supposed to be regarded as read-only?

I decided to go looking for answers in the Inspector floating window. Sure enough, in the Document Inspector, I found that I could view the attribute $ParagraphSpacing. There is also a Default text box, and it makes sense that if I change the value there, my problem should be solved! However, I can't enter a value into that text box. In gray text, it says "8 (preference)". To me, that indicates that the value of 8 has been set at some "higher" level and should be changed there. Well, the only level higher than Document is Application, and I can't find a way to change $ParagraphSpacing through either the Tinderbox Inspector or through the (Apple menu) > Preferences panel.

Q2: Does anybody know why I can't change the default value of $ParagraphSpacing through the Document Inspector? And what does that "8 (preference)" in gray text mean?

Q3: How do I change the value of $ParagraphSpacing?

Thank you for whatever insights you can contribute to understanding this situation and solving the problem!

If you change Paragraph Spacing in the Text Inspector’s Text pane, the spacing of the current note does update immediately.  Of course, this applies only to the current note.

To change the paragraph spacing in new notes, use Document Settings.