how to save the current display layers using SKILL??

Here's some code I threw together (not really tested thoroughly) to dump the info. See the comments:

/* abDumpLayerAttributes.il

Author     A.D.Beckett
Group      Custom IC (UK), Cadence Design Systems Ltd.
Language   SKILL
Date       Sep 10, 2013 
Modified   
By         

Function to save information similar to the "save LSW info"
menu in the LSW or Palette 

Call:

abDumpLayerAttributes("./dump.file")

To load the resulting file, use:

load("./dump.file")

Note that there is probably an assumption that the layout window
is open before doing this...

Also, the object settings have not been thoroughly tested, so
apologies if there are any typos in the object names.

***************************************************

SCCS Info: @(#) abDumpLayerAttributes.il 09/10/13.13:10:43 1.1

*/

/***************************************************************
*                                                              *
*             abDumpLayerAttributes(fileName [tf])             *
*                                                              *
*    Dump the object and layer attributes for a given tech     *
* file (default is the one associated with the current window) *
* into the specified file name. The resulting file is a SKILL  *
*                  file which can be loaded.                   *
*                                                              *
***************************************************************/

procedure(abDumpLayerAttributes(fileName @optional 
    (tf techGetTechFile(geGetEditCellView())))
    let((port)
	port=outfile(fileName)
	unless(port
	    error("Unable to write to file %L\n" fileName)
	)
	fprintf(port "let((tf)\n  tf=techGetTechFile(ddGetObj(%L))\n"
	    tf~>libName)
	;----------------------------------------------------------------
	; not all of these objects make sense to be visible and/or
	; selectable, but never mind...
	;----------------------------------------------------------------
	foreach(object
	    '("inst" "pin" "via" "Groups" "P&R" "Snap" "Area" "Cluster" 
	    "SoftBlock P&R" "SoftBlock Snap" "SoftBlock Pin" "Halo" 
	    "Placement" "Routing" "Fill" "Slot" "Pin" "Feedthru" 
	    "Screen" "track" "RoutingGrid" "PlacementGrid"
	    "Shapes" "Circle/Ellipse" "Donut" "Label" "Path"
	    "PathSeg" "Polygon" "Rectangle" "Other Shapes"
	    "Fluid Guardring" "Mosaic"
	    )
	    fprintf(port "  leSetObjectVisible(%L %L)\n"
		object leGetObjectVisible(object))
	    fprintf(port "  leSetObjectSelectable(%L %L)\n"
		object leGetObjectSelectable(object))
	)
	;----------------------------------------------------------------
	; Now the layer attributes
	;----------------------------------------------------------------
	fprintf(port "  leSetLayerAttributes(tf\n")
	foreach(lp tf~>lps
	    fprintf(port "    list( '(%L %L) %L %L %L)\n"
		lp~>name lp~>purpose lp~>valid lp~>selectable lp~>visible
	    )
	)
	fprintf(port "  )\n")
	fprintf(port "  leSetEntryLayer('%L tf)\n"
	    leGetEntryLayer(tf)
	)
	fprintf(port ")\n")
	close(port)
    )
)

Here's some code I threw together (not really tested thoroughly) to dump the info. See the comments:

/* abDumpLayerAttributes.il

Author     A.D.Beckett
Group      Custom IC (UK), Cadence Design Systems Ltd.
Language   SKILL
Date       Sep 10, 2013 
Modified   
By         

Function to save information similar to the "save LSW info"
menu in the LSW or Palette 

Call:

abDumpLayerAttributes("./dump.file")

To load the resulting file, use:

load("./dump.file")

Note that there is probably an assumption that the layout window
is open before doing this...

Also, the object settings have not been thoroughly tested, so
apologies if there are any typos in the object names.

***************************************************

SCCS Info: @(#) abDumpLayerAttributes.il 09/10/13.13:10:43 1.1

*/

/***************************************************************
*                                                              *
*             abDumpLayerAttributes(fileName [tf])             *
*                                                              *
*    Dump the object and layer attributes for a given tech     *
* file (default is the one associated with the current window) *
* into the specified file name. The resulting file is a SKILL  *
*                  file which can be loaded.                   *
*                                                              *
***************************************************************/

procedure(abDumpLayerAttributes(fileName @optional 
    (tf techGetTechFile(geGetEditCellView())))
    let((port)
	port=outfile(fileName)
	unless(port
	    error("Unable to write to file %L\n" fileName)
	)
	fprintf(port "let((tf)\n  tf=techGetTechFile(ddGetObj(%L))\n"
	    tf~>libName)
	;----------------------------------------------------------------
	; not all of these objects make sense to be visible and/or
	; selectable, but never mind...
	;----------------------------------------------------------------
	foreach(object
	    '("inst" "pin" "via" "Groups" "P&R" "Snap" "Area" "Cluster" 
	    "SoftBlock P&R" "SoftBlock Snap" "SoftBlock Pin" "Halo" 
	    "Placement" "Routing" "Fill" "Slot" "Pin" "Feedthru" 
	    "Screen" "track" "RoutingGrid" "PlacementGrid"
	    "Shapes" "Circle/Ellipse" "Donut" "Label" "Path"
	    "PathSeg" "Polygon" "Rectangle" "Other Shapes"
	    "Fluid Guardring" "Mosaic"
	    )
	    fprintf(port "  leSetObjectVisible(%L %L)\n"
		object leGetObjectVisible(object))
	    fprintf(port "  leSetObjectSelectable(%L %L)\n"
		object leGetObjectSelectable(object))
	)
	;----------------------------------------------------------------
	; Now the layer attributes
	;----------------------------------------------------------------
	fprintf(port "  leSetLayerAttributes(tf\n")
	foreach(lp tf~>lps
	    fprintf(port "    list( '(%L %L) %L %L %L)\n"
		lp~>name lp~>purpose lp~>valid lp~>selectable lp~>visible
	    )
	)
	fprintf(port "  )\n")
	fprintf(port "  leSetEntryLayer('%L tf)\n"
	    leGetEntryLayer(tf)
	)
	fprintf(port ")\n")
	close(port)
    )
)