I think everyone’s got the CAD/3D programs covered, so a slightly “out there” answer:

If you’re just doing 2D blueprints for yourself, do you actually just need a 2D vector program for doing a scale drawing with measurements?

I’ve done a lot of floorplans / layouts/ site maps etc using Inkscape, for instance.

It depends on exactly what you’re wanting out the other end - so you may be lacking a lot of the features in a full CAD program, but the learning curve is comparatively so shallow that you might have a working plan by the end of the day, rather than the end of the month.

Sadly, I think they go with “clear and unambiguous mark only” and “no other marks on the page”.

I hope you’re pronouncing that as “jiggles” :D

Only the first letter should match, then the rest of it is pronounced like a word, in whatever pronunciation sounds coolest.

Also, all abbreviations should be pronounced like words, that’s why we have those new Internet abbreviation words like “loll”, “lemow”, “roffle”, “roff-lemow” “wutf” etc.

“I need to charge my phone, do you have an usba to usbsy cable?”.

<smug>Jraphics Interchange Format</smug>