> For the complete documentation index, see [llms.txt](https://docs.editran.onesait.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.editran.onesait.com/documentacion-editran/ibm-editran-v5.3-comun-z-os-en/interfaces-de-programas-de-aplicacion/introduccion.md).

# Introduction

In some developments, the applications that use the product need information about Editran variables; they want to use internal working resources that are susceptible to being modified as a consequence of the product's evolution. To minimize the impact of such modifications on the applications, application programming interfaces are created that will be kept stable as far as possible.

The APIs available up to now are indicated in the following sections.


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