# ISUSERACTION

#### Syntax

**ISUSERACTION**()

**Example**

The ISUSERACTION returns true, if it is called

* in the "On switch" formula of a menu, which has been switched by the user
* in the "On click" formula of a button, which has been clicked by the user
* in the "On input" formula of a cell or a table widget, in which the user has entered a new value

The function can be used to ensure that a call of action will not lead to unnecessary calls of other actions. Like in this example:

Button1 call "On click" action of button2 (with the CLICK function), and button2 does the same on button1. Without the proof by the ISUSERACTION function, this would lead to a recursion. 

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