Adding a block means choosing which column it goes in, so a flat list cannot
express it. A one-column band shows one button and a two-column band shows two —
and a band with one column never has to answer a question it has no answer to.
The blocks are links, like everywhere else: pressing one opens its editor.
That is the last of the four actions the painted-on bars used to carry.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>