66

SET (see Chapter 12)
Use SET changes the text output attributes for a given stream.
Syntax
SET [I/stream-number[,I] text-attribute if,]text-attribute)...
where each text-attribute may be one of
ZONE zone-size
MARGIN margin-position
EFFECTS effects-on, effecls-oY
MODE write-mode
COLOUR colour-number
COLOR colour-number
FONT font-ordinal
POINTS point-size
ANGLE text-angle
WRAP truth-vafue

SGN (see Chapter 3)
Use SGN is a function which returns the sign of the value of its argument.
Syntax
SGN)argumentl
where argument is a numeric-expression.

SHAPE (see Chapter 12)
Use
SHAPE draws a polygon shape.
Syntax SHAPE [I/stream-number, I point, point, point [, point).., if,) attribute)...
where
attribute is: FILL [ONLY) (WITH fill-style)
or: WIDTH line-width
or: STYLE line-style
or: COLOUR colour-number or: COLOR colour-number or: MODE write-mode

SHARED (see Chapter 6)
Use SHARED makes global variables directly available to routines.
Syntax SHARED shared-object[, shared-object)...
where furmal-var is simple-variable or array-identifier) [ ) .. br array-identifier [ [, ) ...
66

66