I am using the changes package. The margin comments have larger font than the text in the main body. I can't find any mention of font size settings here.
I can insert commands like \tiny at the start of the comment text, but unfortunately, the line spacing in the margin is not shrunk commensurately. Also, for better signal-to-noise, it'd be better to set the default font size once rather than for each comment.
todonotespackage. Try\usepackage[todonotes={textsize=tiny}]{changes}. Check sec. 4.1.13 "todonotes" inchanges' package manual. PS: Providing an mwe is always recommended, and sometimes required.todonotesargument hadn't worked, or even if it was pointed out as an MWE was needed because the problem wasn't trivial. Did you want to post your solution as the answer?