diff --git a/docs/internals/contributing/writing-code/coding-style.txt b/docs/internals/contributing/writing-code/coding-style.txt
index 0d84cda..2114660 100644
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Model style
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| 136 | 136 | * ``def get_absolute_url()`` |
| 137 | 137 | * Any custom methods |
| 138 | 138 | |
| 139 | | * If ``choices`` is defined for a given model field, define the choices as |
| 140 | | a tuple of tuples, with an all-uppercase name, either near the top of |
| 141 | | the model module or just above the model class. Example:: |
| 142 | | |
| 143 | | DIRECTION_CHOICES = ( |
| 144 | | ('U', 'Up'), |
| 145 | | ('D', 'Down'), |
| 146 | | ) |
| | 139 | * If ``choices`` is defined for a given model field, define each choice as |
| | 140 | a tuple of tuples, with an all-uppercase name as a class attribute on the |
| | 141 | model. Example:: |
| | 142 | |
| | 143 | class MyModel(models.Model): |
| | 144 | DIRECTION_UP = 'U' |
| | 145 | DIRECTION_DOWN = 'D' |
| | 146 | DIRECTION_CHOICES = ( |
| | 147 | (DIRECTION_UP, 'Up'), |
| | 148 | (DIRECTION_DOWN, 'Down'), |
| | 149 | ) |
| 147 | 150 | |
| 148 | 151 | Use of ``django.conf.settings`` |
| 149 | 152 | ------------------------------- |