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2.3.8 Draw Objects Origin

Some objects will a natural rotation point within them. By setting the object origin to this point, subsequent rotation will be about that point and not the layout origin. This is referred to as a Relative origin and will be present if the origin is non-zero. When an object with a Relative is moved or rotated, the origin and angle are adjusted but the relative draw point values remain the same. If an object has a zero origin, it is called Absolute. If it is moved or rotated, the origin and angle remain zero, but all the obect point(s) are adjusted.

You can choose to set the origin to make it Relative or put it back to Absolute (origin zero) during Section 2.3.6 or Section 2.2.8 or by using the Section 2.2.13 settings.

As a practical matter, the object will appear identical until a subsequent rotation value is entered in the Section 2.2.13 window in both cases.

In Origin Mode (entered using 'o' or the Context Menu, there are certain shortcuts available -

'p' Go to Points Mode
'0' Move to Absolute (Origin to 0,0)
'1-4' Move the Relative Origin to the shape point 1 to 4
'l' Move the Relative Origin to the last selected point
'm' Move the Relative Origin to the middle of the shape (centeroid).