Search pattern for DYKs and ITNs. This is a Lua pattern (similar to a regex pattern), so certain characters have special meanings.
commonscat
Category name on Commons (without the "Category:" prefix) in which to search for images. The searches will include 3 levels of sub-categories below this category.
category
Category name on Wikipedia (without the "Category:" prefix) in which to search for articles. The searches will include 3 levels of sub-categories below this category.