Owner`s manual

Page 5-2 Chapter Five
Eagle 250 Owner's Manual, Revision 01
Key Description
The key on most keyboards acts much like the shift key on a typewriter. By
holding down
, you can type upper case letters and the symbols on the upper
half of the keys with two symbols.
CAPS LOCK
While the
CAPS LOCK
key is enabled, letters you type appear in upper case. On most
keyboards, keys other than letters are not affected by
CAPS LOCK
.
ESC
This key is used with some programs (such as the AlphaVUE text editor) to signal
the end of input, or to switch between command modes; however, you do not use
ESC
at AMOS command level.
CTRL
You use the
CTRL
(or CONTROL) key with other keys to enter a different kind of
character—a "control character." AMOS and much of the software on the computer
interprets control characters as special instructions.
To type a control character, you use the
CTRL
key like the key: hold down the
CTRL
key and press the other key. For example, to type a Control-C, hold down the
CTRL
key and type the letter C. In this book, we indicate control characters this way:
CTRL
/ C. Appendix A lists some of the control characters AMOS recognizes.
Special Keys on the Terminal Keyboard
There are also a number of keys (often 12 or 16) at the top or left of the keyboard, labeled with F and a
number. These are the “function keys.” Many applications use the function keys to perform special
editing, choose options, and so on. Your dealer will tell you if your application uses these keys.
Correcting Typing Mistakes
You can correct any mistakes you may make while typing a command line as long as you have not yet
pressed the
ENTER
key. You can:
•
Press
RUBOUT
to erase single characters.
•
Type
CTRL
/ U to move the cursor to the beginning of the line.
•
Type
CTRL
/ C to tell AMOS to ignore the line.
See the table above for explanations of
RUBOUT
and control characters.
If you press the
ENTER
key before correcting your mistake, and the command you entered was not a valid
AMOS command, AMOS lets you know it did not understand the command. For example, suppose you
make a mistake entering the PRINT command:
PRIMT
ENTER
?PRIMT?
After letting you know it does not understand, AMOS displays its prompt. You can now try again.