I've been away for a while but I used to create section lines on an arc (see the attachment) but for the life of me I can no longer remember how to do it.
Help if you can.
To create a section line with an arc, please review the following video. https://screencast.autodesk.com/main/details/5ad91
After placing the first "straight" line, within the command prompt you can choose "Half, Name, Arc". You will want to press A to create an arc.
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