Changes

In ConTeXt many {{code|1=key=value}} parameters are common across commands, so this wiki intends to have separate description pages for those parameters. Those are not linked from the text, in general, but they are linked from the syntax tables on command description pages. ([[Command/setupframed|Example]].) The linking is achieved with <nowiki>{{key|alternative}}</nowiki>, which expands to [[Command/keyword:alternative|<nowiki>[[Command/keyword:alternative]]</nowiki>]]. Nearly all the target pages do not exist yet, but don't let that stop you from linking to them. We'll get around to filling them in.