# Commands about Layout Viewports [GstarCAD 2027](Help%20System/GSTARCAD/2027/Index.md) → [Commands](Help%20System/GSTARCAD/2027/Commands/(Commands).md) → [Command Groups](Help%20System/GSTARCAD/2027/Commands/00%20Command%20Groups/(Command%20Groups).md) **Commands：** - [MVIEW (GstarCAD 2026)](../../../2026/Commands/M/MVIEW.md) - [MVSETUP (GstarCAD 2026)](../../../2026/Commands/M/MVSETUP.md) - [SCALELISTEDIT (GstarCAD 2026)](../../../2026/Commands/S/SCALELISTEDIT.md) - [VPCLIP (GstarCAD 2026)](../../../2026/Commands/V/VPCLIP.md) - [VPLAYER (GstarCAD 2026)](../../../2026/Commands/V/VPLAYER.md) - [VPMAX (GstarCAD 2026)](../../../2026/Commands/V/VPMAX.md) - [VPMIN (GstarCAD 2026)](../../../2026/Commands/V/VPMIN.md) - [VPORTS (GstarCAD 2026)](../../../2026/Commands/V/VPORTS.md) - [ZOOM (GstarCAD 2026)](../../../2026/Commands/Z/ZOOM.md) **System Variables：** - [EXTNAMES (GstarCAD 2026)](Help%20System/GSTARCAD/2026/System%20Variables/E/EXTNAMES.md) - [MAXACTVP (GstarCAD 2026)](Help%20System/GSTARCAD/2026/System%20Variables/M/MAXACTVP.md) - [PSLTSCALE (GstarCAD 2026)](Help%20System/GSTARCAD/2026/System%20Variables/P/PSLTSCALE.md) - [PSVPSCALE (GstarCAD 2026)](Help%20System/GSTARCAD/2026/System%20Variables/P/PSVPSCALE.md) - [SPACESWITCH (GstarCAD 2026)](Help%20System/GSTARCAD/2026/System%20Variables/S/SPACESWITCH.md) - [UCSVP (GstarCAD 2026)](Help%20System/GSTARCAD/2026/System%20Variables/U/UCSVP.md) - [VIEWTWIST (GstarCAD 2026)](Help%20System/GSTARCAD/2026/System%20Variables/V/VIEWTWIST.md) - [VPROTATEASSOC (GstarCAD 2026)](Help%20System/GSTARCAD/2026/System%20Variables/V/VPROTATEASSOC.md) --- [Original help](https://www.gstarcad.net/help/GstarCAD_2027_en-US/detail/commandReferences/Commands%20about%20Layout%20Viewports.html) · © Gstarsoft Co., Ltd.