Διευκρινήσεις σχετικά με τα κουμπιά |
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........... | |||
Move a point by clicking and dragging. | Add a point, by moving to the position you want a point
and clicking (or by pressing then dragging then
releasing). |
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Construct a line through two points by clicking then
dragging then clicking. |
Undo your last step - and the step before that, and so on... | ||
Clear everything and start again. |