Images/OLEs/Underlays:
- OLEHIDE: Controls the display and plotting of OLE objects.
- FRAME: Turns the display of frames on and off for all external references, images, and DWF, DWFx, PDF, and DGN underlays.
- DGNFRAME: Determines whether DGN underlay frames are visible or plotted in the current drawing.
- PDFFRAME: Determines whether the PDF underlay frame is visible.
- OLEFRAME: Controls whether a frame is displayed and plotted on all OLE objects in the drawing. IMAGEFRAME: Controls whether image frames are displayed and plotted.
- XCLIPFRAME: Determines whether xref clipping boundaries are visible or plotted in the current drawing.
- IMAGEHLT: Controls whether the entire raster image or only the raster image frame is highlighted.
- INSNAME: Sets a default block name for the INSERT command.
- INSUNITS: Specifies a drawing-units value for automatic scaling of blocks, images, or xrefs inserted or attached to a drawing.
- OBJECTISOLATIONMODE: Controls whether hidden objects remain hidden between drawing sessions.
- OPENPARTIAL: Controls whether a drawing file can be worked on before it is fully open. There is a catch with this one: the drawing needs to have been saved last in modelspace and INDEXCTL variable must not be set to Zero.
- PEDITACCEPT: Suppresses display of the Object Selected Is Not a Polyline prompt in PEDIT.
- RASTERDPI: Controls paper size and plot scaling when changing from dimensional to dimensionless output devices, or vice versa.
- RECOVERAUTO: Controls the display of recovery notifications before or after opening a damaged drawing file. Suggestion: try it and seee if it helps.
- RECOVERYMODE: Controls whether drawing recovery information is recorded after a system failure. Recommendation: turn it on.
- HPDLGMODE: (turn off if your PC cannot hadle it) Controls the display of the Hatch and Gradient dialog box and the Hatch Edit dialog box.
- HPQUICKPREVIEW: (turn off if your PC cannot hadle it) Controls whether to display a preview when specifying internal points for a hatch.
- HPSEPARATE: Controls whether a single hatch object or separate hatch objects are created when operating on several closed boundaries.
- HPTRANSPARENCY: Sets the default transparency for new hatches and fills.
- GFCLR1: Specifies the color for a one-color gradient fill or the first color for a two-color gradient fill.
- GFCLR2: Specifies the second color for a two-color gradient fill.
- GFCLRSTATE: Specifies whether a gradient fill uses one color or two colors.