# Miscellaneous modification of ABINIT behaviour for developers.

### This page gives hints on how to modify ABINIT behaviour for developers with the ABINIT package.

##### Copyright (C) 2016-2017 ABINIT group (XG)

Mentioned in help_features#11.

### Table of content:

- 1. Introduction.
- 2. Related input variables.

### 1. Introduction.

Specialized input variables to tune the inner behaviour of ABINIT freely.
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### 2. Related input variables.

Input variables for experts:

... useria [USER Integer variable A]
... userib [USER Integer variable B]
... useric [USER Integer variable C]
... userid [USER Integer variable D]
... userie [USER Integer variable E]
... userra [USER Real variable A]
... userrb [USER Real variable B]
... userrc [USER Real variable C]
... userrd [USER Real variable D]
... userre [USER Real variable E]
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