Crossbows (skill)
The Crossbows skills governs a character's mastery of crossbow weapons. Crossbows fire bolts and are slower than bows, but tend to be more accurate. See the weapon page for a list of all crossbows and their properties.
Crossbows aptitudes
From Dungeon Crawl Stone Soup 0.8.0 in-game documentation:
Hu | Ce | Dg | Ds | Dr | DD | DE | HE | SE | Fe | Gh | Ha | Ko | Mf | Mi | Mu | Na | Op | Og | HO | Sp | Te | Tr | Vp |
0 | 1 | -1 | -1 | -1 | 1 | -1 | 0 | 0 | N/A | -1 | -1 | 2 | -2 | 1 | -2 | -1 | 0 | -3 | -1 | 0 | 1 | -4 | -2 |