It provides help in both reading & writing script so that developers can understand the applicable use-case within transactions.
Currently the site is split into two main sections (learn & develop). The former leans toward an educational platform with articles that introduce the basics of scripts & documentation on common ops & scripts. The latter part of the site is more akin to developer tools with a transaction deserializer that highlights script within the raw hex & with a sandbox IDE that displays the status of the stack as script is executed.
this territory is moderated