Template:Slope/doc

Turns words into universal slope symbols. Parameter is case-insensitive, and strips all whitespace before parsing.

Slope	Valid keys
◣	\, \bottom, bottom\, grave, gravebottom, bottomgrave
◢	/, /bottom, bottom/, acute, acutebottom, bottomacute
◤	/top, top/, acutetop, topacute
◥	\top, top\, gravetop, topgrave