REQ-MOD-UI-PREVIEW asked the panel's small layout preview to draw each occupied cell in the module's fill_color with its glyph character, but the preview has only ever drawn the color -- at that scale the glyph would not be legible. The requirement now says what the preview does, and points at the layout dialog's full-scale grid as the place a module is identified by its glyph. No code change. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01Ne3mejABZoLWKLh8fgpM3x