Revert "Update main.md"

This reverts commit e0254ca1a893739c8616529d0cf59fcc28378d3f.
Revert "Revert "Update main.md""

This reverts commit 1951925871c38656cd8b40f3b560240bfe4ce02a.
Merge remote-tracking branch 'original/master'
Quick reference: added RAW variable