In Code mode, Format file lays the open file out one element to a line, with the styles one declaration to a line, and Ctrl+Z puts it back. While Format pasted code is ticked, pasted HTML or CSS is laid out as it lands.
The two files in Code mode are the page and Layout, and a line under their names says what each reaches. The colour swatches beside the code sit in a margin of their own, each named by its colour.
The row above the page holds File, the page, Visual or Code, and Desktop or Mobile, as two-way switches that look like the rest of Magpie. The editor opens in the mode you last used, takes the whole width of the window, and the question-mark button and its window are gone: Help for the editor is the sidebar's Help link. The code panel keeps its colours in dark mode.