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Looking at Google Doc's toolbar update, they refer to them as "options".
In the Format menu, text formatting options (including bold, italic, font size, and more) will be moved to a new “Text” submenu.
The read-only parts can be called Indicators / System ...
The term "Breadcrumbs" doesn't refer to an icon, but to a set of hierarchical links that show the user the location of the current page in relation to the site. The term itself is a reference to the fairy tale of Hansel and Gretel.
As for the others, they are all named because they look like real world items.
The "hamburger" icon kinda looks like a ...
In my opinion, you are on the right track.
Having two options depending on the state of the page seems the optimal way forward. It makes total sense to have the option "Add Link" if the user has not added any links yet, so they know what exactly they need to be doing when they click on that option; and the option "Edit Link", once the user has added a link,...
I own a domain that's my full name (e.g. firstnamelastname.com). My email address is firstname.lastname@example.org. I've found it easy to give it to people in person or over the phone (as opposed to some weird name you may have to pick if you use Gmail etc., for example).
The only times people found it weird was because it was my own domain (some people ...
Besides agreeing with the options you provided above, there're also possibilities like below,
which I use the last one, but with my surname additionally next to my name like email@example.com