Reference_Syntax.cancelAction = false | true;
Reference_Syntax.cancelAction = 0 | 1;
Reference_Syntax.cancelAction = 0 | 1
false | 0 (default)
The user action, such as printing, submitting, or digitally signing, does not occur. The user experience is determined by the scripting event that contains the cancelAction reference:
preOpen – The drop-down list does not expand to display the list of values.
preSubmit – Form submission does not occur.
preSign – The form is not digitally signed.
prePrint – No print dialog boxappears, and the form is not printed.
preSave The form is not saved. The user experience is that no action occurred.
Event Model
See also 

cancelAction