docs: horizontal plot split

CLAUDE.md

@@ -7,7 +7,7 @@ This file provides guidance to Claude Code (claude.ai/code) when working with co
 udpscope is a **GTK4 oscilloscope-style viewer for a UDPStreamer source**. It receives one
 data source -- a UDPStreamer stream through `deps/udpsclient` by default, or another registered
 source kind (see `docs/claude/architecture.md`) -- buffers it in a large ring (default 10 M samples per signal, under an 8 GiB memory limit), and draws it
-with `deps/plotter` — a figure of up to eight stacked rows sharing one x window. On top of
+with `deps/plotter` — a figure of up to eight plots in stacked rows (a row can be split into up to four side by side) sharing one x window. On top of
 the live view it provides the things a bench scope provides: a trigger with a pre/post event
 window, a pause that freezes the visible window, cursors, statistical measurements,
 user-defined math channels built in a node editor, and an export of the visible window to