Code Editor

Edit model functions in the Properties Panel. Expand a code section to fill the panel while keeping its controls available.

Copy link to this sectionOpen codeCopy link to this section

Select a place, transition, or differential equation in the canvas or left sidebar. Open its code section in the Properties Panel:

• Firing Time contains a transition’s predicate or stochastic rate.
• Transition Results contains a transition’s output function.
• Differential Equation contains the equation’s properties and code.
• Visualizer contains a place’s visualization code and preview.

The item’s menu in the left sidebar opens its code directly. For a place with dynamics, View equation below its assigned differential equation opens that equation’s properties and code.

Every code section, the Visualizer included, is checked as you type: type errors are underlined and listed in the Diagnostics tab, completion suggests the names in scope, and pointing at a name shows its type.

Copy link to this sectionFill the panelCopy link to this section

Use the Fill panel button in the section header to expand that section to the full width and height of the Properties Panel’s section area. Its controls stay beside the code. The canvas and the panel’s width stay unchanged.

The expanded header shows a breadcrumb, such as Transition Collision › Transition Results, using the parent’s usual icon and title. Long parent names fade so the code section’s name stays visible. Click the parent name to return to the item’s other properties. Code, undo history, cursor position, and the other sections’ sizes and contents remain in place.

Expanding and returning animate within the section container. These transitions respect the animation setting and your system’s reduced-motion preference.

On hosts with app navigation enabled, expanding a section updates the URL and browser history. Back closes the expanded view and Forward reopens it. Reloading or opening that URL restores the selected item and expanded section.

Returning restores keyboard focus to Fill panel, or to the section header if the section was collapsed before opening the link. The section keeps its saved collapsed state.

Drag the panel’s left edge to change its width. After returning to the other properties, drag the dividers between sections to change their heights.

Changes apply automatically to the model. Read-only files and simulation modes keep code read-only. Selecting another item or changing the file or active subnet restores the usual section layout.

The Properties Panel and Definitions show the same saved code. Switching between them keeps your latest edits.