HP 250 Operating page 35

The HP 250/35 Integral Workstation
Display
The display is used to view program listings, information entered
from the keyboard, and program output. The display memory can
store more characters than shown on the screen at one time. The
screen holds one page which consists of 24 lines of up to 80
characters each. If the display has been filled, the top line
rolls off the screen. As you type a line, the display will roll
up to make room for a new line. When viewing display lines, you
may access lines preceding or following those currently on the
screen by pressing the display editing keys
~
and
~
•
The illustration shows the scrolling process.
When your HP 250 is ready for operation, a blinking underscore,
known as the cursor, is visible on the screen.
The capabilities of the display are numerous. For example,
characters may appear on the screen as half-bright, underlined,
blinking, or inverse video (or any combination). These features
can be accessed either from the keyboard or programmatically.
Accessing these display enhancement features is described later
in this chapter.
3-16
The HP 250/35 Integral Workstation
Display
The display is used to view program listings, information entered
from the keyboard, and program output. The display memory can
store more characters than shown on the screen at one time. The
screen holds one page which consists of 24 lines of up to 80
characters each. If the display has been filled, the top line
rolls off the screen. As you type a line, the display will roll
up to make room for a new line. When viewing display lines, you
may access lines preceding or following those currently on the
screen by pressing the display editing keys
~
and
~
•
The illustration shows the scrolling process.
When your HP 250 is ready for operation, a blinking underscore,
known as the cursor, is visible on the screen.
The capabilities of the display are numerous. For example,
characters may appear on the screen as half-bright, underlined,
blinking, or inverse video (or any combination). These features
can be accessed either from the keyboard or programmatically.
Accessing these display enhancement features is described later
in this chapter.
3-16