Commodore Plus 4 - Page 104

98 The BASIC Language
Parameter: machine-language program address
The address can be a number between decimal 0 and 65535 (hexadecimal
$0000-$FFFF), or a numeric expression standing for a number between 0 and
65535.
Example: SYS 1525
TAB
TAB (number)
Turns on the built-in software. This is part of the definition
for function key 1.
Abbr. tA
Example:
Used in a PRINT command to move the specified number of spaces to the right
from the left side of the screen or page. A TAB function is similar to a tab key on a
typewriter. The number in parentheses can be from 0 to 255. Values above 39
refer to subsequent lines.
TAB can appear anywhere in a PRINT command, including between two
PRINT items. No punctuation is required to set off a TAB function. Regardless
of where TAB appears in the PRINT command, TAB always counts spaces from
the leftmost column of the current line.
TAB Compared with SPC
The difference between TAB and SPC is that TAB always counts spaces from
the leftmost column while SPC counts spaces from the last PRINTed item. For
example, in the following program, TAB forces WORD to be printed five spaces
from the left side of the screen. SPC forces WORD to be printed five spaces from
the end of the previous PRINTed item, which was 12345.
10 PRINT "12345" TAB(5) "WORD"
20 PRINT "12345" SPC(5) "WORD"
30 PRINT" 1234512345"
RUN
12345W0RD
12345 WORD
1234512345
TAN
TAN (number)
Abbr. none
Numeric function that finds the tangent of the angle in parentheses. The angle
must be expressed in radians. If the error message DIVISION BY ZERO appears
after a TAN function, TAN has overflowed.
For more information, see the Mathematical Calculations section of Chap
ter 3.