(Excerpts from a message dated 10-25-99, George White to Eddy Thilleman;
original topic: LINUX):

Hi Eddy--

 ET> I thought PM (program manager) is the window manager?

GW>PM (_Presentation_ Manager) is the underlying graphical support
  >system. If you are a programmer, all the basic graphical and window
  >management calls are to the PM subsystem and are documented in the
  >Presentation Manager .inf file (document).

    According to "The Design of OPS/2" by Deitel and Kogan (ISBN
0-201-54889-5), now out of print:  "The PM was introduced in OS/2
version 1.1; it is a graphical user interface used in all subsequent
OS/2 releases" (p 266).  "The API is divided into two functional groups:
the _windows_API_ and the_graphics_API_.  The Windows API was derived
from the windowing architecture of _Microsoft_Windows_" (p 268).

    The WPS is an object-oriented application that runs in a PM session.
"The workplace shell can be configured to look like the DOS shell, the
Windows user interface, or the OS/2 1.x desktop manager, to ease user
migration" (p 267). 

GW>Program Manager is a Windows thing...

    Since I've never done Windows, I wouldn't know about Program
Manager!

    Regards,

        --Murray

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 * MR/2 2.25 #120 * Never send a PM program to do a text-mode job

--- Maximus/2 2.02