Using Cmd (⌘), Shift (⇧), and Right-Hand arrow (→) keys, one can select a line of text in Obsidian.
However, how does one select the next line --with the current line remaining selected?
Using one’s browser, for example, one can do this by pressing on ⇧ and the down arrow (↓).
What’s possible in Obsidian is skipping to the bottom by pressing ⇧, ⌘, and ↓.
However, skipping to the bottom of a particular note isn’t the same as selecting a given number of adjacent lines horizontally positioned.