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Control Object Display Example 1

This example demonstrates the use of the DRAW/ALL statement.

$$
$$ Declarations
$$
    ENTITY/LN1,LN2,LN3,LN4,CR1,CR2
$$
$$ Geometry Definition
$$
    LN1 = LINE/-2,0,0,-1
    LN2= LINE/0,-1,0,1
    LN3= LINE/0,1,-2,0
$$
$$ Draw Statement
$$
    DRAW/OFF
    CR1= CIRCLE/-.625,0,.5
    CR2= CIRCLE/.625,0,.5
$$
$$ Draw Statement
$$
    DRAW/ALL
    LN4 = LINE/-2,0,0,0
    HALT

Result: All objects LN1, LN2, LN3, CR1,CR2 are regenerated and rendered to the display. Object LN4 is not displayed as the DRAW/OFF display state is still valid.