Execution and debugging

The Run button executes the whole active source file. Ctrl+Enter (Cmd+Enter on macOS) executes selected text, or the current %% section when there is no selection. Ctrl+Shift+Enter executes the whole file. Selection and section toolbar controls are also available.

Sections start with %% at the beginning of a line, allowing indentation. Markers inside strings are ignored. A selection must contain complete statements; Studio does not automatically execute setup sections or reset the Workspace. Diagnostic positions remain aligned with the original document.

%% Setup
x = linspace(0, 2*pi, 100);

%% Analysis
y = sin(x);
plot(x, y);

Scripts, selections, sections, the console and Canvas blocks share variables and registered functions in the same engine session. Changes made in one surface are visible in the others. Run setup first when a later section depends on its variables.

The engine is selected from the configured executable, then SUN_BINARY, then automatic local, bundled or PATH candidates. Packaged Studio includes a motor; normal installed use does not require Cargo. Engine capabilities govern availability of newer features.

• F5 starts debugging or continues; Shift+F5 stops.
• F9 toggles a source breakpoint; F10 steps over, F11 steps into, and Shift+F11 steps out.
• F6 checks source without executing it. Checking is not transitive dependency linking.
• Paused frames expose the actual source and local variables. A runtime error without a source position remains unpositioned rather than being assigned a guessed line.
• External function breakpoints become verified when their source loads. Save helper files first: a changed file has a new source identity, and an older or unsaved breakpoint is not silently reused.