Compaq DEC Text Processing Utility AA-PWCBD-TE - Manual (Page 14)

Overview of the DEC Text Processing Utility
1.1 Description of DECTPU
• Free or bound cursor motion
• Learn sequences
• Pattern matching
• Key definition
• Procedural language
• Callable interface
1.1.2 DECTPU and User Applications
DECTPU is a language that you can use as a base on which to layer text
processing applications. When you choose an editor or other application to layer
on DECTPU, that becomes the interface between you and DECTPU. You can also
create your own interface to access DECTPU.
Figure 1–1 shows the relationship of DECTPU with EVE as its user interface.
Figure 1–1 DECTPU as a Base for EVE
D E C T P U
ZK−6545−GE
Editor
EVE
1.1.3 DECTPU Environments
You can use DECTPU on the OpenVMS VAX and OpenVMS Alpha operating
systems.
You can display text in two environments:
• Character-cell terminals
• Bit-mapped workstations running the DECwindows software
1.2 Description of DECwindows DECTPU
DECTPU supports the Compaq DECwindows Motif for OpenVMS user interface.
The variant of DECTPU that supports window-oriented user interfaces is known
as DECwindows DECTPU. The windows referred to as DECwindows are not the
same as DECTPU windows. For more information about the difference between
DECwindows and DECTPU windows, see Chapter 5.
Because DECTPU is a language, not an application, DECTPU does not have a
window-oriented interface. However, DECTPU does provide built-in procedures to
interact with the DECwindows Motif environment. (For information on invoking
DECTPU on systems running DECwindows Motif, see Chapter 2.)
1–2 Overview of the DEC Text Processing Utility