Print output to cursor in the layout window?

OK, here's some code. It's not polished, not fully tested, but might give you a starting point...

/* abDynamicDisplay.il

Author     A.D.Beckett
Group      Custom IC (UK), Cadence Design Systems Ltd.
Language   SKILL
Date       Apr 28, 2011 
Modified   
By         

Example of dynamic display in IC5141. Uses leRegUserObjectSelectionFilter
to track what the user is over - and then builds a message to display.
The highlight label is displayed at the cursor location.

Call abDynamicDisplay(t) to enable (pass nil to disable).

; can set these properties to alter how the highlight labels are drawn
abDynamicDisplay.lpp='("y0" "drawing")
abDynamicDisplay.height=0.2
abDynamicDisplay.font="stick"
abDynamicDisplay.orient="R0"
abDynamicDisplay.justify="lowerLeft"

The code is not polished, not thoroughly tested. It just illustrates
the idea.

In IC61 this is completely obsoleted by the Info Balloon capability.

IC5141 also has "Shape Information" which gives some of this kind of 
display, but what is displayed is hardcoded.

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

SCCS Info: @(#) abDynamicDisplay.il 04/28/11.13:36:35 1.1

*/

/***************************************************************
*                                                              *
*              abDynamicDisplaySelectFilter(fig)               *
*                                                              *
*          Filter function to do the dynamic display.          *
*                                                              *
***************************************************************/

procedure(abDynamicDisplaySelectFilter(fig)
let((win hs message point)
    win=geGetEditCellViewWindow(fig~>cellView)
    ;--------------------------------------------------------------------
    ; If the object is the same as last time, don't re-generate
    ;--------------------------------------------------------------------
    unless(fig==abDynamicDisplay.lastObject
	hs=win~>abDynDisplayHS
	when(geIsValidHilightSet(hs) geDeleteHilightSet(hs))
	;----------------------------------------------------------------
	; Customize this bit to reflect what is shown for each object
	;----------------------------------------------------------------
	case(fig~>objType
	    ("path"
		sprintf(message "Layer: %s Width: %g" fig~>layerName fig~>width)
		)
	)
	when(message
	    abDynamicDisplay.lastObject=fig
	    point=hiGetPoint(win)
	    when(point
		hs=geCreateHilightSet(fig~>cellView 
		    abDynamicDisplay.lpp || '("y0" "drawing"))
		win~>abDynDisplayHS=hs
		geAddHilightLabel(
		    hs
		    geWindowToEditPoint(win point)
		    message
		    abDynamicDisplay.justify || "lowerLeft"
		    abDynamicDisplay.orient || "R0"
		    abDynamicDisplay.font || "stick"
		    abDynamicDisplay.height || 0.2
		    nil
		)
		hs->enable=t
		geRefresh()
	    )
	)
    )
    ;--------------------------------------------------------------------
    ; Always return t because don't want to do any actual filtering
    ;--------------------------------------------------------------------
    t
))

/***************************************************************
*                                                              *
*                   abDynamicDisplay(enable)                   *
*                                                              *
*            Enable or display the dynamic display             *
*                                                              *
***************************************************************/

procedure(abDynamicDisplay(enable)
    if(enable then
	leRegUserObjectSelectionFilter("abDynamicDisplaySelectFilter")
    else
	leUnregUserObjectSelectionFilter()
    )
)

OK, here's some code. It's not polished, not fully tested, but might give you a starting point...

/* abDynamicDisplay.il

Author     A.D.Beckett
Group      Custom IC (UK), Cadence Design Systems Ltd.
Language   SKILL
Date       Apr 28, 2011 
Modified   
By         

Example of dynamic display in IC5141. Uses leRegUserObjectSelectionFilter
to track what the user is over - and then builds a message to display.
The highlight label is displayed at the cursor location.

Call abDynamicDisplay(t) to enable (pass nil to disable).

; can set these properties to alter how the highlight labels are drawn
abDynamicDisplay.lpp='("y0" "drawing")
abDynamicDisplay.height=0.2
abDynamicDisplay.font="stick"
abDynamicDisplay.orient="R0"
abDynamicDisplay.justify="lowerLeft"

The code is not polished, not thoroughly tested. It just illustrates
the idea.

In IC61 this is completely obsoleted by the Info Balloon capability.

IC5141 also has "Shape Information" which gives some of this kind of 
display, but what is displayed is hardcoded.

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

SCCS Info: @(#) abDynamicDisplay.il 04/28/11.13:36:35 1.1

*/

/***************************************************************
*                                                              *
*              abDynamicDisplaySelectFilter(fig)               *
*                                                              *
*          Filter function to do the dynamic display.          *
*                                                              *
***************************************************************/

procedure(abDynamicDisplaySelectFilter(fig)
let((win hs message point)
    win=geGetEditCellViewWindow(fig~>cellView)
    ;--------------------------------------------------------------------
    ; If the object is the same as last time, don't re-generate
    ;--------------------------------------------------------------------
    unless(fig==abDynamicDisplay.lastObject
	hs=win~>abDynDisplayHS
	when(geIsValidHilightSet(hs) geDeleteHilightSet(hs))
	;----------------------------------------------------------------
	; Customize this bit to reflect what is shown for each object
	;----------------------------------------------------------------
	case(fig~>objType
	    ("path"
		sprintf(message "Layer: %s Width: %g" fig~>layerName fig~>width)
		)
	)
	when(message
	    abDynamicDisplay.lastObject=fig
	    point=hiGetPoint(win)
	    when(point
		hs=geCreateHilightSet(fig~>cellView 
		    abDynamicDisplay.lpp || '("y0" "drawing"))
		win~>abDynDisplayHS=hs
		geAddHilightLabel(
		    hs
		    geWindowToEditPoint(win point)
		    message
		    abDynamicDisplay.justify || "lowerLeft"
		    abDynamicDisplay.orient || "R0"
		    abDynamicDisplay.font || "stick"
		    abDynamicDisplay.height || 0.2
		    nil
		)
		hs->enable=t
		geRefresh()
	    )
	)
    )
    ;--------------------------------------------------------------------
    ; Always return t because don't want to do any actual filtering
    ;--------------------------------------------------------------------
    t
))

/***************************************************************
*                                                              *
*                   abDynamicDisplay(enable)                   *
*                                                              *
*            Enable or display the dynamic display             *
*                                                              *
***************************************************************/

procedure(abDynamicDisplay(enable)
    if(enable then
	leRegUserObjectSelectionFilter("abDynamicDisplaySelectFilter")
    else
	leUnregUserObjectSelectionFilter()
    )
)