Standards CAMWOOD and spreadsheves
The modules ESTIMATE within software CAM are not used as an assistance with the establishment of the estimates. Often the seizure of information concerning figuring is imposed upstream launching in manufacture. In complement, the spreadsheves when with them appear little adapted in their capacity to manage and are limited to a function of "worksheet". 

Dedicated software trades  
If the data of machining remain generally skeletal, of the variations remain between the procedures and the reality of a workshop. Specific specificities to each culture of company must be preserved and do not have to be neglected. The possibility of modifying unbounded and in-depth the modules already present and of being able to create the
new ones represents an essential attraction of ESTIMATE 2002. 

Developments overmeasure
The steps adopted in this type of development is often illustrated by a scenario of shelf. 

• Approximate drafting of a schedule of conditions according to various observations and meetings.

• Overall invitation to tender in a little standardized market.

• Supply of a demonstration program which mistakes on the first specifications.

• Six months later, supply of a new demonstration program which is not applicable any more bus of the changes in the company have out-of-date some of the first specifications.

• New agreement on final improvements to save the project in which much money and clean love was invested etc.

This scenario in extreme cases of futility reproduces each day in many
editors. Time spent to complete and modify the product is so long that
at the time of its delivery the conditions in the company changed so
much that the software is exceeded. It is indeed always difficult to
express complex interfaces and software characteristics.