Topology

• Drag devices from the palette onto the canvas.
• Your topology autosaves to this browser (see the bottom-right indicator). Save downloads a .json file, Load opens one.
• Both side panels start collapsed as thin rails — click a rail to expand it, the panel name to collapse. The state is remembered.
• Click a free port, then another port, to connect them with a cable.
• Right-click a device: menu (config, terminal, delete).
• Zoom: mouse scroll. Pan: drag the background.

MTik routers

• Double-click opens the visual config (tabs: Interfaces, IPv4, Routes, DHCP, Firewall, Wireless).
• Right-click → "RtOS terminal" opens the full CLI.
• Commands: /ip address, /ip route, /ip firewall, /ip dhcp-server, /interface, /bridge, /queue, /ping, /export ...
• Tab completion, ↑/↓ history, ? shows help.

Testing

• Workstation/server terminal: ping, wget, arp, ipconfig.
• Watch animated packets and events in the log — it persists across reloads; use Clear Log to wipe it.