# adding formulae
Additional formulae can be added without modifying this plugin by writing
plugins that register functions in the
`IkiWiki::Plugin::postsparkline::formula` namespace. These functions will
receive on input a reference to a hash of parameters, and a sorted list of
# adding formulae
Additional formulae can be added without modifying this plugin by writing
plugins that register functions in the
`IkiWiki::Plugin::postsparkline::formula` namespace. These functions will
receive on input a reference to a hash of parameters, and a sorted list of