I know this question might be kind of hard to understand... Okay, so usually you justify type, and you can get some rivers, right? I've been reading this book, and the type is set in a way where there are no rivers. The type is justified, but it seems as if the individual letters are justified (like the tracking) rather than the words. The space differs from each word's letters, and not the space between each word. Attached are some photos of the book in question.
Exaggerated examples of what I am trying to say.
The book's layout:
H e l l o m y n a m e i s L a n d o n.
Hello my name is Landon.
Yes, InDesign allows this. Look in the Justification options: the default settings are to adjust Word Spacing from 80% to 133%, with a preferred value of 100% (which is in Space Widths), and Letter Spacing has all set to 0%, meaning it should not be touched. (I may have set these as defaults. YMMV.)
To achieve this effect, you could -- at least theoretically -- set "Word Spacing" to 100%,100%,100% and set Letter Spacing to something like -5%,0%,20%. Be warned though that in this case, InDesign will Do What You Ask, but that this will not "thus" make Good Typography!
With slightly more sane settings, Word Spacing at 90%,100%,110% and Letter Spacing at 0%,0%,20% (note I don't touch the "Minimum"!), you get something like this. Top: regular settings, bottom: adjusted.
Thank you Jongware.