nl_tokens: Is ( comp > = ref ) according to sliding window
pl_tokens: function geWindow ( ref , comp ) { var max = ref + ( MAX_MSGID / 2 ) ; var <mask> = ref ; if ( max >= MAX_MSGID ) { // Handle roll-over max = max - MAX_MSGID - 1 ; return ( ( comp <= max ) || ( comp >= min ) ) ; } else { return ( ( comp <= max ) && ( comp >= min ) ) ; } }