When building a Visual LISP or VBA routine, understand the unique rules that control these objects.More>>

User's request for global text clean-up routine leads to dual solution that serves as a great instructional example, as well.More>>

Custom programming lets your systems share data -- and ramps up your productivity.More>>

AutoCAD users can dip their toes in customization or dive in head-first. Time and effort required may vary, but every approach pays off.More>>

Harry offers a few tips for using free Web downloads, and gives a sneak peak of Cadalyst's new CAD Tips site.More>>

Every computer program is unique, but the steps of every programming process are fundamentally the same.More>>

Harry gets specific about how to include error catching in AutoLISP and VBA programs.More>>

In Part 1 of a series, Harry offers some basic advice about error handling for Visual LISP and VBA programming.More>>

Today's lesson demonstrates how to create an object-oriented Visual LISP routine that processes multiple AutoCAD drawings.More>>

Visual LISP offers built-in and definable options for automatically arranging data in ascending, descending, or alphabetical order.More>>