A large portion of relevant modules/templates have now been switched to cargo. Various usages of SMW throughout the wiki need to be replaced by the new functions, in particular item tables. If some pages do not show up but contain no errors, please null-edit them. To see how you can help with the port check out Path_of_Exile_Wiki:To-do_list/SMW_migration (and leave a comment on the talk page if you have questions).
Item classes which count as One Handed:
In almost all cases, modifiers for One Handed apply only to melee, for example using the phrase "One Handed Melee Weapons" on a passive skill. See One-handed melee weapon.