# Reduce Helix keyboard build variation

The build commands for the Helix keyboard are:

```
make <helix_build_name>:<keymap_name>
```

For `<helix_build_name>`, specify the one in the rightmost column of the table below, such as `helix`,` helix/pico`.

| before Oct 17 2019   |  Oct 17 2019            | Mar 10 2020             | Nov 29 2020             |
| ---------------------|-------------------------|-------------------------| ------------------------|
| helix/rev1           | helix/rev1              | helix/rev1              | helix/rev1              |
| helix/pico           | helix/pico              | helix/pico              | helix/pico              |
|                      | helix/pico/back         | helix/pico/back         | helix/pico/back         |
|                      | helix/pico/under        | helix/pico/under        | helix/pico/under        |
|                      |                         | helix/pico/sc           | --                      |
|                      |                         | helix/pico/sc/back      | helix/pico/sc           |
|                      |                         | helix/pico/sc/under     | --                      |
| helix/rev2 (=helix)  | helix/rev2 (=helix)     | helix/rev2 (=helix)     | --                      |
|                      | helix/rev2/back         | helix/rev2/back         | --                      |
|                      | helix/rev2/back/oled    | helix/rev2/back/oled    | ( --> helix/rev2/back)  |
|                      | helix/rev2/oled         | helix/rev2/oled         | helix/rev2　(=helix)    |
|                      | helix/rev2/oled/back    | helix/rev2/oled/back    | helix/rev2/back         |
|                      | helix/rev2/oled/under   | helix/rev2/oled/under   | helix/rev2/under        |
|                      |                         | helix/rev2/sc           | --                      |
|                      |                         | helix/rev2/sc/back      | --                      |
|                      |                         | helix/rev2/sc/oled      | --                      |
|                      |                         | helix/rev2/sc/oledback  | helix/rev2/sc           |
|                      |                         | helix/rev2/sc/oledunder | --                      |
|                      |                         | helix/rev2/sc/under     | --                      |
|                      | helix/rev2/under        | helix/rev2/under        | --                      |
|                      | helix/rev2/under/oled   | helix/rev2/under/oled   | ( --> helix/rev2/under) |