Language Reference Guide : System Classes : SessionObject Class : ProcessWindow Attribute
 
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ProcessWindow Attribute
Data Type: integer
4GL Access: RW
The ProcessWindow attribute specifies whether commands executed by the call system statement run in a process that has a window.
Valid values are:
TRUE
Specifies that executing statements using the call system statement will create windows
FALSE
Specifies that system commands run using the call system statement will not have process windows
Default: TRUE