Curl sets callbacks in the manner also adopted by Groovy: {CommandButton width=100pt, height = 50pt, label = {center {bold Invokes an event handler when clicked}}, control-color = "orange", || Attach the following event handler to this CommandButton {on Action do {popup-message title = "Your Message", "This is a user message dialog." } }} Curl comments use the vertical bar in several variations.
Curl efectuează callbacks în același stil Groovy: {CommandButton width=100pt, height = 50pt, label = {center {bold Invokes an event handler when clicked}}, control-color = "orange", || Attach the following event handler to this CommandButton {on Action do {popup-message title = "Ваше сообщение", "Это сообщение диалога с пользователем." } }} Pentru a comenta codul în Curl, se utilizează o bară verticală în mai multe versiuni.