These are custom smarty functions which are used by TikiPro
smarty_function_displayname This is a smarty tag which allows various different identifiers to be used to indentify a user other than his/her 'login'
Bitweaver uses the Smarty template engine to process templates (*.tpl files). Inside these templates, you can use all Standard Smarty functions as well as some extensions introduced by Bitweaver. This is a list of the Bitweaver extensions.
Outputs any kind of link. Especially useful when it comes to links used to sort a table, due to the simplified syntax and loss of cumbersome if clauses also useful if the you want to display an icon as link since smartlink takes biticon parameters