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I have tried severally to apply line weight but it's not working. Even the line weight settings doesn't pop up

 How do i add section indicators to my floor plan How do i also add those 1,2,3 labels to the floor plan Where can i find the doors and windows tag Archicad 26 educational license  

I don't understand. I was creating a two storey floor plan. I saved my progress and when i wanted to continue i couldn't find the saved file in the homepage so i browsed for it where i saved it and when it's saying can't read file plan

1. How do i change wall colour to just white? 2. How do i make line drawn using line tools thick? 3. How do i draw curved walls?

The line tool. How can i position the line at a desired angle. Like 60°,30° and all that