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ELLIPTICAL PIE (see Chapter 12)
Use
ELLIPTICAL PIE draws a elliptical “pie” section on a graphics device.
Syntax ELLIPTICAL PIE [#stream-number, I point, x-radius, start-angle, end-angle, aspect 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
x-radius is an integer-expression, giving a positive, non-zero value. aspect isa numeric-expression, giving a positive, non-zero value. start-angle and end-angle are numeric-expressions, giving positive, orzero, values.

END (see ChapterS)
Use END is used to terminate execution of the program when it has completed its allotted tasks, as opposed to STOP, which is used in debugging.
Syntax END

ENVIRON$ (see Chapter 15)
Use ENVIRONS isa function which information from the “environment” in the form of a
string
Syntax
ENVI RONSlargument)
where
argument is either an integer-expression, giving a positive, non-zero, value.
or a string-expression.
EOF (see Chapter 10)
Use EOF isa fanction, which returns TRUE itthere is nothing more to be input fnomthe
given stream.
Syntax
EOFI[#)st’eam-numberl
EPS (see Chapter 3)
Use EPS is used to give a measure of the significance eta number.
Syntax
EPSlargumentl
where argumentis a numeric-expression.
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