nl_tokens: little helpers
pl_tokens: function q ( str ) { if ( Array . isArray ( str ) ) { return str . <mask> ( q ) . reduce ( function ( prev , curr ) { return prev . concat ( curr ) ; } , [ ] ) ; } else if ( str instanceof HTMLElement ) { return [ str ] ; } else { return [ ] . slice . call ( document . querySelectorAll ( str ) ) ; } }