What do you mean by "not straight"? Does the line curve? Does it zig-zag? Or is it straight, but not perfectly horizontal on the screen?
If the latter, is it only slightly off, or is it really off (a degree or two versus 5 or more degrees)? If it is just very slightly off, and none of the items below helps, it could be an issue with your monitor or graphics card.
Are you on the Model "tab", or a Layout "tab"?
If the Model "tab" is current (all model space, all the time, no paper space), is your current UCS set to World, or are you in a user-defined UCS?
Have you used the DVIEW command at all in the file? Done any 3D orbiting? Messed around with the ViewCube?
If World, are you viewing the model from the Top view direction? If so, are you viewing the model from a "plan" view (positive X-axis exactly to the right, positive Y-axis exactly vertical)? If you use the PLAN command, do your lines become "straight"?
If a user-defined UCS, if you use the PLAN command on the current UCS, do your lines become "straight"?
Yes, the relative @ option doesn't seem to work any longer.........
I miss it....Autodesk...please bring this back.
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