{{omit from|ACL2}}
{{omit from|awk|No access to GUI functions.}}
{{omit from|Batch File|No access to GUI functions.}}
{{omit from|Blast}}
{{omit from|Logtalk}}
{{omit from|Lotus 123 Macro Scripting}}
{{omit from|M4}}
{{omit from|Maxima}}
{{omit from|PARI/GP}}
{{omit from|PHP|PHP cannot create windows by itself}}
{{omit from|PostScript}}
{{omit from|Retro}}
{{omit from|SQL PL|It does not handle GUI}}
{{omit from|TI-83 BASIC|Does not have windows.}}
{{omit from|TI-89 BASIC|Does not have windows.}}

Treat windows or at least window identities as [[wp:First-class_object|first class objects]].

*Store window identities in variables, compare them for equality.
*Provide examples of performing some of the following:
**hide, show, close, minimize, maximize, move, and resize a window.
The window of interest may or may not have been created by your program.