题目内容
Vector drawings are extremely useful because of their accuracy.
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With the Line command, you can draw a simple line from one point to another, and to end this command, just hit the Enter key on the keyboard.
You can erase but not move each line segment already drawn.
Before you begin to draw a line you have no option but to specify two points from the screen.
The difference between the line and the construction line lies in the fact that the latter is of infinite length and passes through two picked points rather than from one point to another.
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