Unit installation

NEW

10 OPEN6,4

20 PRINT#6,"012345678901234567890"

30 PRINT#6,CHR$(16);

40 PRINT#6,"15 THIS STARTS IN COLUMN 15."

50 CLOSE6

012345678901234567890

THIS STARTS IN COLUMN 15.

The second type of horizontal tab gives more exact spacing by

dividing the page into

480

columns, each 1/6th of a character wide.

This type uses CHR$(27) and CHR$(16) followed by two other CHR$

numbers. These other numbers specify the column where printing

starts. The total number of columns is determined by adding the sec-

ond number to 256 times the first number. Our samples in Table 3-1

illustrate the command.

Table

3-1.

Dot spacing commands

Command

CHR$(27)CHR$(16)CHR$(0)CHR$(50)

CHR$(27)CHR$(16)CHR$(0)CHR$(186)

CHR$(27)CHR$(16)CHR$(1)CHR$(50)

Number of

columns

50( 0+ 50= 50)

186( 0+186=186)

306 (256 +

50 = 306)

The following program shows how the three commands in Table

3-l space the word “TAB” across the page.

NEW

10 OPEN3,4

FOR T=1 TO 3

30 READ X

Y=INT(X/256): Z=X-(Y*256)

50 PRINT#3,CHR$(27)CHR$(16)CHR$(Y);

60 PRINT#3,CHR$(Z)"TAB";

70 NEXT T

80 PRINT#3

CLOSE3

100 DATA 50,186,306

TAP TAB

TAB