If you've never heard of macros, let alone nested ones, but enjoy using Shared Email Templates and want to reach a master level to create templates that are as interactive as possible, you're on the right help page ;)
Being hidden inside another macro, which means being nested, ~%WTE, short for ~%WhatToEnter, can definitely work magic :) Let's see how to make that magic happen.
Relying on the ~%Fill macro to get the subject line filled with the text you need, you might want to have an opportunity to change the default text to another one when pasting your template. It can easily be done with a dialog that will show up every time you click Paste—if there's ~%WTE inside the ~%Fill macro.
To nest ~%WTE within ~%Fill, follow these steps:
You can check the result by hovering the cursor over the ~%Fill macro placeholder in your template:
As soon as you paste such a template into an email message, the dialog you've created will appear showing the default text for the subject line. You can keep it or change to another one—it's up to you ;)
If you'd like to choose between several options when adding text to your message subject, nest ~%WhatToEnter within the ~%Add macro and let ~%WTE display a dropdown list that will contain the items you need. These are the steps to follow:
Here you go. Now the ~%Add macro has the nested ~%WTE inside:
When pasting this template into an email message, you'll see a dialog with the dropdown list that the nested ~%WTE returns. Just decide what text you need to add to the subject line in the email message you're going to send, select the corresponding list item, and click OK:
Now when you know how to make the ~%WhatToEnter macro nested, feel free to use it as a secret ingredient of your most interactive (and definitely most impressive) templates. Add it to taste :)