HP T5725 - Compaq Thin Client, User Manual

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Introduction
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Introduction
This chapter introduces the TeemTalk for Unix terminal emulation
software and describes the scope of this User's Guide.
TeemTalk & The X Window System
TeemTalk for Unix is the essential connectivity tool for enabling non-X based
applications to be run in the X environment. TeemTalk provides precise emulation of a
wide range of industry standard terminals with impressive additional features formu-
lated to increase productivity and reduce network loading. These include dynamic
window sizing, hotspots, soft buttons, keyboard mapping, mouse button definition and
customising capabilities. TeemTalk for Unix integrates seamlessly into the X Window
system with the same look and feel as other applications.
The X Window System is a network-based windowing system that provides a
common graphical interface for application programs. It defines how applications
create windows and the graphics displayed in them.
X is based on a client-server model in which the client is the application program and
the server controls the display and keeps track of user input. Communication
between client and server can be achieved via networks, serial interfaces or internal
operating system streams using standard X protocols. Since X is both window based
and network oriented there can be multiple applications on the network creating
individual windows on an individual display. The display is therefore providing a
service to each application and hence is known as the X display server.
The basic function of TeemTalk for Unix is to accept DEC, IBM, etc., command
sequences from a host application (client) and convert them into equivalent X func-
tions which can then be passed on to the X display server. This means that current
investment in host application software can be retained in the X Windows
environment.
Each window displayed by TeemTalk is, in effect, a separate 'terminal'. Several
terminal emulation windows may be displayed simultaneously on the same display
server, all running different programs, but only one window may be active at any one
time.