SeeView Manual

Introduction
HP NonStop SeeView Manual—526355-004
1-6
SeeView Terms
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Simplified Interface: By associating complex sets of commands with a menu item,
the SeeView product greatly reduces the detailed knowledge needed to use utilities
for NonStop systems.
SeeView Terms
The following terms describe SeeView components.
Task
A task refers to a process that the SeeView program is communicating with. Tasks can
have their output displayed in a window (or several windows). When you create a task
(either from a menu selection or through a SeeView command), SeeView builds a Task
Control Block (TCB) to keep track of attributes specific to the task. SeeView has a limit
of 4096 TCBs, which means you can run up to 4096 processes in your SeeView
environment. SeeView stores the output in a cache.
Window
A window displays the output of a task (process), or equivalently, the contents of a
task’s cache. SeeView allows you to have a total of 128 windows in your environment.
Because you can have up to 4096 tasks, some tasks are not assigned to a window.
You can assign windows to the task whose output you want to display. You can have
the output from several tasks displayed in the same window, you can have several
windows displaying output from the same task (perhaps at different locations in the
cache associated with the task), and you can copy text displayed in any window for
use elsewhere in your SeeView environment (for example, as input to another task).
Sill
You generally cannot modify the display area of a window, but you can enter
commands at the bottom of a window. This area is called the sill. When you press
Return and the cursor is on a window's sill, the text up to the cursor position is sent to
the task assigned to the window (such as TACL or FUP).
Cache
When you send a command to a task by entering it on the sill of a window assigned to
the task and pressing Return, the SeeView program sends the command to the
process and waits for a response. The response to your command is then displayed in
the current window and also stored in a cache, managed by the SeeView program.
Caches are similar to large arrays that can be accessed by read and write operations
via indexing. They are linearly linked, sequential lists of strings containing menu items,
data, or commands.
By storing output in cache memory, the SeeView program enables you to scroll back to
look at old output. Because each task generally has its own cache, you have a record
of your work with each task. Two tasks can share a cache when one task starts