Issue: Linetypes display correctly in Model Space but appear continuous or wrong inside Layout viewports.
Cause: Linetype scaling (MSLTSCALE, PSLTSCALE, LTSCALE) is mismatched between Model Space and Paper Space.
Solution:
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Set MSLTSCALE = 1 so linetypes respect annotation scaling in Model Space.
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Set PSLTSCALE = 1 so linetypes scale properly in viewports.
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Use a consistent LTSCALE (often 1 or 0.5) across the drawing.
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Regenerate (REGENALL) and resave — this fixes most viewport display glitches.
