划线放样工艺的目的在于掌握复杂的木建筑设计的三维空间。这项传统的专门技术与现代的机械化标准相反，强调建筑者在建造过程中的作用，并且赋予结构本身一种创造性的推动力。法国自13世纪以来就使用划线放样这种组合的图解工序，它能够通过设计图精确地表达一座建筑物的体积空间、相互接合，以及木质组件的特色。它的传授是和建筑理论及实践截然不同的特殊科目。在这种工艺过程中，木匠可以在营造之前测定所有的组件，无论它们多么复杂，从而保证木构架建成时所有的组装部件将会完美地安装到一起。行业协会中的木匠认为，划线放样传统具有一种象征的和传授的意义，而这种意义一直是它的奥秘所在，在年轻工匠的生命历程中，这种技艺是传统价值体系的关键部分。今天有许多培训中心、行业协会和商业生意都提供划线放样的专门训练。

The purpose of the underlined process is to master the three-dimensional space of complex wood architecture design. This traditional expertise, contrary to modern mechanization standards, emphasizes the role of builders in the construction process and gives the structure itself a creative impetus. France has been using a graphical process of this combination since 13th century, which is capable of accurately expressing the volume space of a building, the bonding of each other, and the characteristics of wood components through a design diagram. Its teaching is a special subject which is very different from architectural theory and practice. In this process, carpenters can measure all components before they are created, no matter how complex they are, to ensure that all assembly parts will be perfectly installed when the wood frame is built. The carpenter in the trade association believes that the tradition of marking has a symbolic and instructive meaning, and that this meaning has always been its mystery, and that this skill is a key part of the traditional value system in the course of the life of young craftsmen. Today, many training centers, trade associations and business businesses offer specialized training in underlined.