tip - here's how to reduce Allegro board file size

There is a skill code out there called auto size.  much easier.

Out where? This would come in handy!

Out where? This would come in handy!

The file date stamp on my pc is from 2010.  So Ron Guthrie, I say Thanks!

/*******************************************************************
* DISCLAIMER: The following code is provided for Cadence customers *
* to use at their own risk. The code may require modification to   *
* satisfy the requirements of any user. The code and any           *
* modifications to the code may not be compatible with current or  *
* future versions of Cadence products.                             *
* THE CODE IS PROVIDED "AS IS" AND WITH NO WARRANTIES, INCLUDING   *
* WITHOUT LIMITATION ANY EXPRESS WARRANTIES OR IMPLIED WARRANTIES  *
* OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE.              *
*******************************************************************/
; File: autosize.il
;
;
; Usage: Load this file autosize.il
;  Issue the command autosize on the Allegro command line.
;    Optionally you can specify an amount to expand the drawing extents
;    If you wish to make the drawing size 200 units larger in all directions
;    than the extents of the drawing you would enter
;
;    autosize 200
;
;    The expand option is optional and if it is not specified then the
;    drawing will be resized to the extents of the current database objects.
;
; Note:
;
;    THIS CODE IS UNSUPPORTED AND HAS HAD MINIMAL TESTING.
;    This example from the online documentation is intended to
;    show the use of the axlExtentDB and axlDBChangeDesignExtent
;    functions to resize a drawing based on the database objects.
;
;Author: Ron Guthrie
; Cadence Design Systems
; Version 1.0
; Date: August 31,2006
;
axlCmdRegister("autosize" 'RBG_autosize)
procedure( RBG_autosize(@optional (expand "0"))
let( list(extents ll_exp oversize)
    oversize=evalstring(expand)
    extents = axlExtentDB('obstacle)
    ll_exp=minus(oversize)
    extents = bBoxAdd(extents list( ll_exp:ll_exp oversize:oversize ))
    unless(axlDBChangeDesignExtents(extents)
        axlMsgPut(list("Failed to resize drawing.\n" 3))
    );endif
);endlet
);endproc

Thanks!

BTW - I still am on 16.6, and have not tried it on 17.x, Note sometimes there is an issue with large boards with D or larger fabrication boarders, when I save the board after using the code Allegro will create an unrecoverable error, and save the database as a .sav file.  This is easily fixed by hand, I just increase the boundaries a little.  It happened maybe 1 out of 100 or so boards.  I find it extremely useful, especially when I get designs from other people or organization/companies.  I just wish I could find skill code to remove customized sub classes, which I find in almost every design from someone else