# Code → network

> See what a JavaScript expression becomes in Handwired: every affine, reglu and select operation of a circuit, laid out by layer, built live by the real runtime.

Source: https://handwired.wiki/pages/circuit-graph.html

<p class="lede">Pick a small program. The page builds it with Handwired and draws every operation by layer — cells on the left, outputs highlighted — then lists the same operations as formulas.</p>

*(Interactive demo: open https://handwired.wiki/pages/circuit-graph.html)*

## How do I read the graph?

Each box is a wire: an input cell or an operation's result. Edges are the terms an operation reads; dashed edges have negative coefficients. An operation's layer is one more than the deepest wire it reads, so the number of columns is the program's depth.