NAME

     cj_ds_layer, lda, ldb, ldc, ldd, ldg, ldn,	ldw, ldx -
     display layer(s) by various methods

FORMAT

     :cj_ds_layer;='<method>'[;...]

ALIASES

     :ldx    an	alias for      :cj_ds_layer
     :lda    an	alias for      :cj_ds_layer;='all layers'
     :ldc    an	alias for      :cj_ds_layer;='current work layer'
     :ldd    an	alias for      :cj_ds_layer;='display layers only'
     :ldn    an	alias for      :cj_ds_layer;='by number'
     :ldw    an	alias for      :cj_ds_layer;='work group layers'

     :ldb    another alias for :ldn
     :ldg    another alias for :ldw

     (For aliases, remember that ld stands for "layer display".)

LEVEL

     1u

DESCRIPTION

     This command sequences through one	or  more  layers  in  the
     current  drawing,	clearing  the  screen and then displaying
     each subsequent layer when	<CR> is	pressed.  While	the layer
     is	 being	displayed, its layer number, name and description
     are shown on the message line.  Only layers having	some con-
     tent  are displayed while empty layers are	silently skipped.
     When the last layer has been displayed and	the command  ter-
     minates, the drawing is automatically refreshed.

     When using	the all	layers,	display	layers only or work group
     layers  methods,  once  the complete layer	sequence has been
     displayed,	there is an option to either repeat  the  display
     sequence or exit.

PROMPTS

     Display layers by?	  def: EXIT
			  all layers
			  by number
			  current work layer
			  display layers only
			  work group layers

	 Select	one of the following options:

	 all layers    (or enter: a)

	     This prompts:

	     Display next layer?   def:	next   EXIT

	     and sequentially displays each layer in the  current
	     drawing  regardless  of  the layer	display	mode set-
	     ting.  This means that even layers	set to	OFF  will
	     be	 displayed  in	this  mode.  Press <CR>	or select
	     def: next to continue with	the next layer.	 When the
	     last  layer  is  displayed,  there	 is  an	option to
	     repeat the	sequence.

	     Mnemonic alias:  :lda


	 by number    (or enter: b or n)

	     This prompts:

	     Layer number to display?	def: EXIT   OTHER

	     displaying	the layer whose	number is entered.   This
	     prompt   repeats  allowing	 multiple  layers  to  be
	     reviewed until <CR> is entered or EXIT is selected.

	     Mnemonic alias:  :ldn  (:ldb also works)


	 current work layer    (or enter: c)

	     This displays the current layer set  for  work  (WK)
	     and then prompts:

	     Press <CR>	to EXIT:

	     at	which point the	drawing	is redisplayed.

	     Mnemonic alias:  :ldc


	 display layers	only	(or enter: d)

	     This prompts:

	     Display next layer?   def:	next   EXIT

	     and sequentially displays each layer in the  current
	     drawing  with  its	 layer	mode  currently	 set  for
	     display (D).  Press <CR> or select	def: next to con-
	     tinue  with  the next layer.  When	the last layer is
	     displayed,	 there	is  an	option	to   repeat   the
	     sequence.

	     Mnemonic alias:  :ldd

	 work group layers    (or enter: w or g)

	     This prompts:

	     Display next layer?   def:	next   EXIT

	     and sequentially displays each layer in the  current
	     work  group,  a  set of up	to ten consecutive layers
	     sharing all  but  the  last  digit	 in  their  layer
	     number.   For  example, the ten layers from 10230 to
	     10239 would form a	work group  and	 if  the  current
	     layer was any layer within	this range, then this set
	     of	layers would be	displayed.

	     Press <CR>	or select def: next to continue	with  the
	     next layer.  When the last	layer is displayed, there
	     is	an option to repeat the	sequence.

	     Mnemonic alias:  :ldw  (:ldg also works)



     Finished?	 def: EXIT   REPEAT

	 This prompt is	displayed when a complete layer	 sequence
	 has  been displayed.  Selecting the REPEAT option causes
	 the sequence to begin	again  while  selecting	 EXIT  or
	 pressing  <CR>	 causes	the drawing to be redisplayed and
	 the command to	terminate.

ERROR MESSAGES

     There are no layers with content to display.
	 This message indicates	that there are no  layers  within
	 the specified display group which contain any content to
	 display.  This	may occur when either the entire database
	 or all	of the work group layers are empty.

     Incorrect response: xxx
	 This message indicates	that the entry xxx was an invalid
	 response.   Check  the	 prompt	 and re-enter the correct
	 value.

     Invalid layer number: xxx
	 This message indicates	that  the  entry  xxx  is  not	a
	 numeric  layer	 number.   Check and re-enter the desired
	 layer number.

     Layer does	not exist: xxx
	 This message indicates	that the specified  layer  number
	 xxx  does  not	 exist in the current drawing.	Check the
	 value and re-enter.

BUGS

     The :ldx command should really have been simply called  :ld,
     but  due  to  poor	 coding	practices throughout the existing
     sigmac database, the string "ld" was being	interpreted as	a
     layer  display  command  rather  than  a command argument to
     other sigmacs.  The easiest (but sad) solution was	to change
     this command's name.

RELATED COMMANDS

     $curlay, $getlid, $glynam,	:dly, :mn_dly

AUTHOR

     C.	Jeffery	Small

COPYRIGHT

     Copyright (c) 1995-2005 by	CJSA LLC