nl_tokens: Performs the calculations for a region on a specified axis .
pl_tokens: function ( childContext , axis ) { var collapseTarget = childContext . collapseTarget , setSizeMethod = 'set' + axis . sizePropCap , sizeProp = axis . sizeProp , childMarginSize = childContext . getMarginInfo ( ) [ sizeProp ] , region , isBegin , flex , pos , size ; if ( collapseTarget ) { // if (splitter) region = collapseTarget . region ; } else { region = childContext . region ; flex = childContext . flex ; } isBegin = region == axis . borderBegin ; if ( ! isBegin && region != axis . borderEnd ) { // a north/south region on the horizontal axis or an east/west region on the // vertical axis: stretch to fill remaining space: childContext [ setSizeMethod ] ( axis . end - axis . begin - childMarginSize ) ; pos = axis . begin ; } else { if ( flex ) { size = Math . ceil ( axis . flexSpace * ( flex / axis . totalFlex ) ) ; size = childContext [ setSizeMethod ] ( <mask> ) ; } else if ( childContext . percentage ) { // Like getProp but without registering a dependency - we calculated the size, we don't depend on it size = childContext . peek ( sizeProp ) ; } else { size = childContext . getProp ( sizeProp ) ; } size += childMarginSize ; if ( isBegin ) { pos = axis . begin ; axis . begin += size ; } else { axis . end = pos = axis . end - size ; } } childContext . layoutPos [ axis . posProp ] = pos ; }