AMSTRAD CPC464 - Atn; Auto; Bin; Border

ATN
ATN (<numeric expression>)
PRINT ATN(1)
0.785398163
FUNCTION: Calculates the arc-tangent (forcing the numeric expression) to a real number ranging
from -PI/2 to +PI/2) of the value specified.
Associated keywords: SIN, COS, TAN, DEG, RAD
AUTO
AUTO [<line number>l[,<increment>]
AUTO 100,50
COMMAND: Generate line numbers automatically. The line number, sets the first line to be
generated, in case you want to add to the end of an existing program. The value of the <increment
between line numbers, and the first line number to be generated, both default to 10 if not specified.
Where an existing program line is in danger of being overwritten, BASIC inserts a star * after the
line number generated as a warning.
BIN$
BIN$ (<unsigned integer expression>[,<integer expression>])
PRINT BIN$(64,8)
01000000
FUNCTION: Produces a string of binary digits that represents the value of the <unsigned integer
expression>, filling with leading zeros to the number of digits instructed by the second <integer
expression>.
Associated keywords: HEX$,STR$
BORDER
BORDER <colour>[,<colour>]
BORDER 3,2
COMMAND: To change the colour of the border on the screen. If two colours are specified, the border
alternates between the two at the rate determined in the SPEED INK command, if given. The
range of border colours is 0....26.
Associated keywords: SPEED INK