# AG\_FLASHWINDOW

> [HTML Version](ag_flashwindow.htm)

_Reviewed and revised December 2023_

**tab(-10, AG\_FLASHWINDOW); flashop; chr(127);**     [Tab(-10,x) Syntax Notes](ag_xxx_syntax-notes.md)

AG\_FLASHWINDOW (28) may be used to force the title bar of the A-Shell window or ATE client to start or stop flashing. This is often useful when the application wants the users attention, but the user has minimized the app and is not paying attention (and the speaker is off). Even when minimized, the flashing on the task bar is hard to ignore. 

**Parameters**

_flashop_

A single digit 1 to start flashing, and 0 to stop.

**Response**

none

**Examples**

? TAB(-10,AG\_FLASHWINDOW);"1";chr(127);    \! start flashing

? TAB(-10,AG\_FLASHWINDOW);"0";chr(127);    \! stop flashing

**Notes**

Note that ATE supports both the ZTERM Escape Sequences and AG\_FLASHWINDOW, but ZTERM does not support AG\_FLASHWINDOW and A-Shell/Windows running locally does not support the ZTERM Escape Sequences. So if you support all three environments, you may want to use the AUI\_ENVIRONMENT[xs](keyword-types.md) function to determine which environment you are in.

**See Also**

•	ׇ[ZTERM Escape Sequences](ztermescapesequences.md).