TRANSLATION_ENABLED Constant not showing in API docs

On the first page of the constants for D6 (http://api.drupal.org/api/constants), the first entry has a blank name. This entry should be for TRANSLATION_ENABLED in translation.module.

I looked at the code for both D6 HEAD and D6 RC1, but I can't figure out why the name isn't being shown on the API site. I compared against other constants, such as BLOCK_REGION_NONE in block.module, but everything appears to be the same as far as formatting.

I'm sure I must be overlooking something simple. If someone could point out what I'm missing, I'd be glad to try creating a patch for this.