Subject: new version of stack manager introduction in response to feedback received from enron traders worldwide , we have upgraded and improved the stack manager to include new functionality which we hope will improve its effectiveness and usefulness in the management of your products . this new release will be automatically installed within the next few days . please ensure you log out at night in order to receive the upgrade . summary of new features multiple children - a " child " product can be the " parent " of another child ( multiple links in a chain ) and different types of links can be placed against a single parent . static product bar prices - when you change a price in the product bar and hit the " + " or " - " button , the price stays - it does not reset to the amount in product properties until you logout . sorting - you can sort by any field on the products tab simply by clicking on the title of the field . for multiple sorts , hold down your " shift " key . parent products which are at the top of a stack do not have their basis relationship identified . ( e . g . the product bar might before have said : " basis link - parent " and now would say " stand alone , parent " ) . detailed feature descriptions multiple children the new version of enrononline allows you to link several products together in a long chain . for example , child product a can be linked to parent product b , which is in turn linked to parent product c . warning : although there is no absolute limit to the number of links in a chain , system performance is degraded by large chains . this is because when a customer attempts a transaction , the database must " lock " each and every product in the chain before it can process the transaction request . the database must then update the stack for each product before releasing the locks . " vertical " chains ( multiple parents and children in one long link ) are much slower to process than " flat " chains ( one parent with many children ) . large vertical chains should be avoided . related to this feature is the ability to have several types of links on the same parent . for example , child product a can have a basis link to parent product b . at the same time , child product c can have a syncopated basis link to the same parent product b . parent b is the parent for both a syncopated basis link and a regular basis link . static product bar prices the new version of enrononline provides for " sticky " product bar price and volume changes . when you change a number on the product bar , it does not reset to the number contained in the product properties menu until after you have logged out . this makes it easier to update prices , volumes , spreads or offsets in a changing market without repeated hits to the " + " or " - " buttons . one of the benefits of setting these numbers to appropriate levels is that it reduces repeated price movements . with the old version of stack manager , if the price delta was too small , traders would often repeatedly hit the price movement buttons . each of these price changes must be communicated across the website to customers and consumes valuable bandwidth . this makes it harder for customers to transact with us - each time they try , a new price update moves the price , resulting in an increased transaction failure rate . entering an appropriate price into the price delta field and then pressing the price movement button means that fewer ( but larger ) price movements are necessary , improving overall system response and reducing customer transaction failure rate . you may also notice a new addition to the product bar prices - a new field for offset to last trade . this allows you to update the offset for products which have offset to last trade selected from the product properties menu . sorting / selecting the new version of enrononline provide significant additional sorting functionality over the old . you can now choose any field heading ( type , location , reference period , etc . ) and sort by that item . you can do multiple sorts by holding down the shift key . example : if you select type and then location while holding the shift key , you will see your products sorted first by product type and then within each product type , by location ( in alphabetical order ) . if you right click on the product menu , you can choose from the same sort criteria , plus you can select " sort by web order " , which allows you to see your products in the same order as they would appear to a customer on the website ( note however , that a customer on the website might be also seeing a number of products in addition to the ones you are managing ) . when you select products , you can drag your mouse while holding down the left mouse button as always , but now you can also hold down the key while making your selections . this allows you to highlight products which are not necessarily adjacent to one another . parent products and f / x products one of the differences in the way that the new version works is in its treatment of how parent products are displayed . the old version showed the type of link associated with the parent in the product bar ( to the left of the main product bar update buttons above the products tabs ) . the new version does not show the type of link . this is because the new version allows for more than one type of link on each parent product . some traders may notice that their products which have f / x links are now identified with a stylised " fx " in the product list . this is to enable easy identification of products which are run as a foreign exchange link to the parent , rather than managed individually . assistance as always , if you have any problems with any enrononline functionality , please contact the 24 hour help desk ( houston : 713 853 4357 , london : + 44 ( 0 ) 20 7783 7783 , australia : + 61 2 9229 2300 ) . general feedback if you have any comments on the new functionality , or suggestions for further functionality , please call david forster on 713 853 1861 . if you had previously suggested new functionality which didn ' t make it into this release , rest assured that you have not been forgotten - we are working hard to improve all elements of enrononline and will try to incorporate your requests into the next release of the enrononline stack manager .