We support some markdown features, and the hash is used to indicate a tag.
Some options to avoid it:
Use some other character. Eg. Book (1)
Use preformatted paragraph style or fixed width text style. eg. if you apply the fixed width style just to the hash symbol — before adding the 1 — it should all work
We would like to add true escaping of the special meaning in future, but we haven’t gotten to that yet.
Thanks for the quick response! I just bought Agenda 2 days ago and I’ve been loving it. It’s on track to replace 3 other apps for me! I understand you guys are still a small team so I don’t mind waiting. Keep up the good work!
Update: Agenda 14 now supports periods and other punctuation inside tags and people tokens if you use the format #(some.tag.2.0), you can see it in action here
And to address the OP’s question, also in Agenda 14:
Markdown formatting, conversion of text into a tag or person, as well as link shortening can now be prevented by typing a backslash preceding the text (e.g. \#fff)
The preceding backslash will disappear after you finish typing your word, or if you move your cursor elsewhere, thereby leaving you with a clean #fff that isn’t an Agenda tag.