A second, a perhaps more important purpose of the add-in regards
buttons, user-defined functions, and links. The add-ins place
a variety of control buttons on worksheets. Also some worksheets
use user-defined functions (functions written by the author
and embedded in the add-in code).
The buttons and functions are linked to the computer
and the add-in file that created them. This causes error messages
regarding links when a workbook created on one computer is
opened on another. The Start command deletes all buttons
and then recreates all buttons or functions necessary for the
worksheets in the workbook. If a workbook containing Markov
worksheets is opened and a message regarding links appears,
simply cancel the message. Use the Start command
to make new buttons and functions with the correct links. If
add-ins outside the collection have worksheet buttons, these
must be replaced by the associated add-in.