Leko is the first CAD to design apparel patterns from scratch. Leko is the only currently existing system that automates the very design and pattern making processes. The result of designer's work is digitized set of patterns that may be plotted, printed or transferred into other CADs for future marker making and cutting - Leko integrates nearly all CADs. Their main goal is to automate the routine pattern making as fully as possible, to enable their users (designers) to re-use their experience. Leko is based on formalized text presentation of method of pattern making, written in special language of geometrical construction's description.

Leko allows users to find new solutions for many problems of sewing manufacturers, such as :

- Experience gaining and training
- Automation of calculations and patterns set making
- Fully automated pattern grading
- Parameterization of series of models
- Standardization of designing and description methods
- Database of models
- Pattern exchange and selling at algorithm level
- Model developing at description level
- More rapid developing of new models

Base Principles of Leko

Integrated environment
Integrated environment of software development includes all the necessary elements and provides disks and provides quick and convenient work with necessary functions. If you know the possibilities of system, you need not any additional service.

Specialized program language
In order to find optimal solutions for programming in special fields, as a rule, special object-oriented program languages are being developed. These languages are of the same characteristics as program languages, but they use terminus of the field. As it was mentioned above, for Leko specialized original language of geometrical constructions, completed with effective syntax and semantic rules referred to recording of operators, qualificators, identificators' names, generating. The language is based on the method of point destination of geometrical objects via calculation formulas.

Built-in functions
To facilitate the records and to multiple the possibilities of program language, it is completed with the set of built-in functions, which formally are not elements of program language, but are being used as these elements. Almost all functions can be realized via main elements of the language (point calculation). Built-in functions allow to simplify algorithm recording and to improve its readability and clearness.

Visualization of calculation and analytical control
Visualization of calculations, which is graphic performance of final and intermediate calculation results, means both the goal of development and additional means of mastering the program. The system is provided with visual control of development, which allows to review all geometrical objects with any specification degree, and analytical control of designing, which allows to review the consequence of geometrical objects definition, its coordinates and other parameters.

User-friendly integrated environment
Friendliness is one of the main characteristics of integrated environment. It includes ergonomic requirements, convenience and simplicity in work. Leko provides you with option of commands via menu and unification of included systems. Low-leveled language allows to record any changes and constructions, that makes the system unlimited in use.