Possible Problems on Lesson slides

I had a couple of questions yesterday regarding some unclarified aspects of the slides and some technical difficulties.

The first was when Basys3.xdc or another .xdc file from Matt Harrison's GitHub was saved it showed up a text file. If this happens to you, here's what to do (if you have Windows 10)

•  Search for File Explorer Options in the Windows 10 settings
•  Navigate to the View tab (second tab at the top)
•  Uncheck "Hide extensions for known file types"
•  Hit Apply
•  Go to your Basys3.xdc file which should now say Basys3.xdc.txt
•  Rename the file by just deleting the .txt
•  The file should now just say Basys3.xdc
•  You can go back to the File Explorer Options and recheck "Hide extensions for known file types", but you don't have to

The second is the positioning of inputs or outputs on a block in Vivado. If you have an output that is labeled at, for example, the top right of the block and another output at the bottom left, but someone else making the design has these labels switched, that is ok. As long as the outputs go to the correct inputs or pins in the block design it should work the same.