it's on the align toolbar.
Like this? Pick them all and Align Colinear.
If the example Wayne showed is somewhat close to what you are describing, then you should be able to find the 'colinear' function on the left side property pane (aka property task manager) or by right-clicking on one of the selected alignment lines you choosen after highlighting all your lines. This should apply for both the model and drawing cases.
I put the Align set on my S key for drawings. That way it's always at the cursor.
Thanks Wayne. I did the same. I've now got quite a collection of shortcuts on my s shortcuts in drawings. See image below for details. I work them pretty hard.
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