View Modes

The editor supports three ways to visualise the same schema. All three modes share the same selection state, so switching modes does not change what is selected or what the Properties Panel shows.

Switch modes using the View Mode buttons at the top of the Display Panel, or by activating a Named View that has a mode override.

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Canvas View

Canvas is the default ERD-style graph. Nodes are draggable and the canvas is pannable and zoomable.

Toolbar

Above the canvas:

Button	Action
+ Class	Add a new class to the schema
+ Enum	Add a new enum to the schema
+ Label	Place a free-floating text label on the canvas
Auto-layout icon	Re-run ELK-based automatic layout

Navigation

Action	How
Pan	Click-drag on empty canvas space
Zoom	Scroll wheel or pinch gesture
Fit all in view	Press F
Select a node	Click it
Multi-select	Shift-click, or drag a selection box
Collapse a node	Double-click it

Context menu

Right-click any class or enum node to:

• Delete the node
• Add to subset ▸ — add to a specific Subset
• Remove from subset ▸ — remove from a specific Subset

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Outline View

Outline renders the schema as a collapsible hierarchy tree. It is better suited to schemas with deep inheritance trees or when screen space is limited.

Layout

Nodes are grouped into two sections: Classes and Enums. Each row can be expanded to reveal child elements:

• Class rows — shows the class name with optional abstract / mixin badges. Expand to see:
  • Child classes (those that declare is_a: <this class>)
  • Slots defined on the class, with req, [], and range-type badges
  • Classes that apply this class as a mixin
• Enum rows — expand to see permissible values

Interaction

Action	Keyboard	Mouse
Select a row	Enter or Space	Click
Move focus up / down	↑ / ↓	—
Expand / collapse	→ / ←	Click disclosure triangle

Selection in Outline drives the same Properties Panel as Canvas — the selected class or enum is editable without switching back to Canvas mode.

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Table View

Table is a spreadsheet-style bulk-edit grid. It is well suited for rapidly editing many classes, slots, or enum values without navigating between nodes.

Enabling Table View: Table view is a feature flag. If the table button is absent from the Rendering section of the Display Panel, scroll down to the Developer section and click table: off to toggle it on. The table button will appear immediately — no page reload required.

Row type switcher

Three row types are available, selected via the toggle at the top of the table:

Button	Rows show
classes	One row per class
slots	One row per slot, grouped by owning class
enums	One row per enum

Columns

Classes:

Column	Editable	Description
Name	Yes	Class name
is_a	Yes	Parent class
abstract	Yes	Abstract flag (checkbox)
mixin	Yes	Mixin flag (checkbox)
Description	Yes	Human-readable description

Slots:

Column	Editable	Description
Class	No	Owning class name
Slot	Yes	Slot name
range	Yes	Range type
req	Yes	Required flag (checkbox)
multi	Yes	Multivalued flag (checkbox)
id	Yes	Identifier flag (checkbox)
Description	Yes	Human-readable description

Enums:

Column	Editable	Description
Name	Yes	Enum name
Values	Yes	Comma-separated permissible values
Description	Yes	Human-readable description

Editing cells

• Text cells: Double-click to enter edit mode. Press Enter to commit or Esc to cancel. Clicking away also commits.
• Checkbox cells: Single-click to toggle.

Active view filtering

When a Named View is active, the table shows only the classes/enums that are members of that view.