theasset The most complete list of Hotkeys is under Options (Gear in the Boards Bar) –> Settings –> Hotkeys (you can change them…but the defaults are pretty good).
Mirrors have to be “Items” within “Documents”. Legend currently silos everything by Document, which can be nice or not-nice, depending on your application. This may get a bit more flexible in the future, but that’s how it is today.
There’s no “right” way to use Legend. That said, there’s definitely things that work well and things that don’t. Unfortunately I don’t have any organized guidance I can provide you, however you seem to have already sorted out most things. Sharing is currently doc-level only. More & better sharing is on a lot of wishlists and probably will happen eventually, but today the limits are as you’ve described.
The biggest impact Documents have is that they fundamentally limit what you can see together in a single Pane. With the exception of Agenda and Calendar Panes – which can pull dated items from everywhere – A Pane will only show items from a single doc at a time.
I have all my actionable Tasks in a single, 3-branch Doc. Those are Work + two Personal subs (“have to” and “want to”). I spend most of my time in Boards where all the Panes are zoomed to one of those root branches. But I apply the same set of tags in all three branches, and use them to find similar Tasks I group together, regardless of the discipline. For example, tag items that are waiting on material according to the type of store it will come from. So If I have to make a run to town for the hardware store, I can quickly filter my items on that tag and see if what stuff I need to pick up for other projects regardless of if that’s work or personal. I live on cellular data, so I have a #wifi tag that lets me pull up a list of things to get done next time I’m on a broadband connection. Again, that will be a combo of work and personal. I needed one Pane that I could point to one place and filter on that tag, so all that stuff had to be in a single Doc.
Yes, that could also be handled by mirrroring the contents of your work/personal docs into the root of a new document and then pointing your filters/searches/etc. to that consolidated doc. As you pointed out there’s no way to mirror the entire work/personal doc as a branch in another doc, so you’d have to structure the work/personal documents with a single root item to contain everything and then mirror that root item. Outlines can be essentially infinite-depth so it’s just a question of whether it tickles your OCD to have that structure. And it would work. But it’s just as easy to put all that stuff in a single doc to start with, and simply simply zoom to control scope. This is much simpler, and requires no mirrors.
It took me literally 4 years to finally admit I had to put everything into a single Doc to do what I want, and just get over the idea of “compartmentalizing” tasks. Yes, I’m THAT stubborn. It was stupid. Zooming is a very effective way to control scope.
The blank Document not being available as a “target” for your mirror in the Move Box is an oversight in that box’s design, not a restriction with Mirrors, which can be root items. As a workaround, try spawning a temporary pane next to the one you’re mirroring out of, point it to the GovProject Document, and hold Alt while doing a drag/drop onto the root level of that Document to create a mirror there.
I have to caution you; Mirrors are not quite 100% yet. No data loss, but sometimes things get weird near them. I originally built a whole system around a mirrored ‘backbone’ – which kinda sounds like what you’re doing here – and that got a bit ugly for me. That was before a lot of bug fixes and improvements came through, but I still consider it a risk. If you’re new to the app my advice is to use mirrors sparingly at first. It sounds like you’re not having any real trouble grasping things, but I personally found it’s too easy to get snatched up by the undertow and drug out to sea with mirrors in play.