Note: This is a work in progress and many formatting issues have been fixed. Read more about the project on the home page.
Handler:
HyperCard sends the mouseUp
message to a button or locked field when the user releases the mouse buttonand the pointer is inside the rectangle of the same button or field it was in when the user pressed the mouse button.
HyperCard sends mouseUp
to the current card when the user both presses andreleases the mouse button while the pointer is not in the rectangle of a button or field.
Any return-separated list of built-in commands, user-defined handlers, or keywords that are part of a message or function handler.