This document covers the following topics:
A complete functional overview of Natural terminal commands is given in the section Terminal Commands Grouped by Function.
You can define another special character as control character; this is
done with the session parameter CF.
When the control character is changed, all terminal commands which have been assigned to function keys will be adjusted accordingly.
Terminal commands can be used in a Natural runtime environment. The following rules apply:
You can enter the control character as first character in any unprotected field or in any position, if the screen contains only protected fields.
As soon as you enter the control character, a window is displayed in which you can enter a terminal command.
Terminal commands which have been entered incorrectly are ignored, but you will not receive a corresponding error message.
If you have entered data in unprotected fields before the terminal command window is displayed, the data will not be processed.
Terminal commands may also be issued from within a program by using the
SET CONTROL
statement. When a terminal command is specified with a SET CONTROL
statement, the control character is omitted.
In the descriptions of several terminal commands, the terms "screen" and "window" are used with the following meanings:
| Term | Meaning |
|---|---|
| Screen | Depending on the operating system under which Natural is
running, "screen" refers either to the entire terminal screen as
such, or to the operating-system window in which the Natural session is
running, or to the Natural main output window.
However, for the sake of convenience, the term "screen" is used in all these instances. |
| Window | Always refers to the Natural window (as explained with the
terminal command %W).
|