28)
CLEAR SCREEN
Function:
The characters shown in the User Display Area are cleared.
Format:
C S
Explanation:
Characters on all of the lines are cleared. To clear only a
particular line, overwrite the line with spaces by means of the PR
command.
Execution:
C S 3 P R <C/R>
R <C/R>
HELLO ! <C/R>
R <C/R>
* All the lines are cleared and a string of seven characters is
written in Line 3.
4 P R <C/R>
R <C/R>
SELECT A MENU ITEM <C/R>
R <C/R>
* A string of 18 characters is written in Line 4.
3 P R <C/R>
R <C/R>
string of seven spaces <C/R>
R <C/R>
* Spaces overwrite the seven character word in line 3, so it
appears only line 3 is cleared.
CS<C/R>
R<C/R>
* All lines are cleared.
LD-V4400 Level I & III • Chapter Four
LD-V4400 Level I & III User’s Manual
TP 116
v1.1 • 9/93
4-29
Содержание LD-V4400 Level I
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