Using _app for hiding and showing labels, help text and text blocks in layouts

_app.Name

_app.Label

1. Define a true/false formula on your top-level model, name it something concise and sensible, like XLabels or whatever you want.  The body of this formula would be something like _app.Name === “ClientInterview” or whatever.
2. Then in the labels or help text, you would just do {}thing 1{}thing 2{}.  Not pretty, I know, but it works now.
3. To take it a step further, you could create a Table to hold a particular set of labels.  You would correlate each row in that table with a different label or help text or whatever… for example, row 0 holds the label for variable X, row 1 holds the label for variable Y, etc. etc..  Then in the labels themselves, you would say {}This is the actual default label{}{.Label]}{}… the TableX gets the zeroth row out of TableX, and gets the value out of the “Label” column.
4. You could keep track (in a spreadsheet or whatever) of what each row number (zero-based) corresponds to.  If that worked well, you could also consider just keeping ALL of the labels (including the default labels) in such a spreadsheet … then your actual labels would just be this: {}{.Label]}{}{.Label]}{} , and the actual language would be in tables.
5. If you kept a spreadsheet of all the labels and corresponding row numbers, your spreadsheet could generate the template that goes into the actual labels/help text/whatever, and could also generate stuff to paste into the table editor!