Keywords: gildas-prog

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# Introduction

The GILDAS Programming Manual includes all necessary information to create applications based on the GILDAS tools. The tools includes:

- SIC the command line interpreter, written in FORTRAN and callable as a subroutine by any program.
- GREG the high level Graphic library.
- Independent Tasks for specific applications. The Task programming section describes how to create new GILDAS tasks.

The GTVIRT low level Graphic library is also described for completeness, although very few programs will actually require using its possibilities directly.

This manual contains several chapters. Chapter 2 (the SIC programming manual) is essential when constructing interactive applications. Chapter 3 (the GREG programming manual) is essential for all graphics applications. To create tasks, the user only needs to read Chapter 4 (the GILDAS task programming manual). Sophisticated graphic application may require to read Chapter 5, the GTVIRT programming manual.