Forces the program to stop running for a specified time. Delay times are specified in thousandths of a second, therefore the function call (delay 3000) will stop the program for three seconds. Because the screen is updated only at the end of draw, the program may appear to 'freeze', because the screen will not update when the delay-frame function is used. This function has no effect inside setup.

Quits/stops/exits the program. Rather than terminating immediately, exit will cause the sketch to exit after draw has completed (or after setup completes if called during the setup method).

Stops Processing from continuously executing the code within draw. If start-loop is called, the code in draw will begin to run continuously again. If using no-loop in setup, it should be the last line inside the block.

When no-loop is used, it's not possible to manipulate or access the screen inside event handling functions such as mouse-pressed? or key-pressed?. Instead, use those functions to call redraw or loop which will run draw, which can update the screen properly. This means that when no-loop has been called, no drawing can happen, and functions like save-frame may not be used.

Note that if the sketch is resized, redraw will be called to update the sketch, even after no-loop has been specified. Otherwise, the sketch would enter an odd state until loop was called.

Restores the prior settings on the 'style stack'. Used in conjunction with push-style. Together they allow you to change the style settings and later return to what you had. When a new style is started with push-style, it builds on the current style information. The push-style and pop-style functions can be nested to provide more control

Saves the current style settings onto a 'style stack'. Use with pop-style which restores the prior settings. Note that these functions are always used together. They allow you to change the style settings and later return to what you had. When a new style is started with push-style, it builds on the current style information. The push-style and pop-style functions can be embedded to provide more control.

The style information controlled by the following functions are included in the style: fill, stroke, tint, stroke-weight, stroke-cap, stroke-join, image-mode, rect-mode, ellipse-mode, shape-mode, color-mode, text-align, text-font, text-mode, text-size, text-leading, emissive, specular, shininess, and ambient.

Executes the code within the draw function one time (or n times in cljs). This function allows the program to update the display window only when necessary, for example when an event registered by mouse-pressed? or key-pressed? occurs.

In structuring a program, it only makes sense to call redraw within events such as mouse-pressed?. This is because redraw does not run draw immediately (it only sets a flag that indicates an update is needed).

Calling redraw within draw has no effect because draw is continuously called anyway.

Causes Processing to continuously execute the code within draw. If no-loop is called, the code in draw stops executing.