Gets or sets whether a SHIFT, CTRL, or ALT key press sends an escape sequence and, if the key is pressed in conjunction with other keys, prefixes the escape sequence to outbound data, in VT-UTF8 emulations.
where expression is a variable that represents a Terminal Object
Remarks
When this property is true, pressing and releasing the modifer key alone causes an escape sequence to be sent; pressing the modifer key with other keys prefixes the escape sequences to outbound data.