Revert "Delete extra word in index.rst"

This reverts commit f52b40175538e841d40e75668ffb4f3c2619064f.
Revert "Tiny RST link fix in modules documentation"

This reverts commit e052251662ec16cd26d39aee2af34852bd16ccb4.
Revert "Move info on limit from the ad hoc command page to the pattern page"

This reverts commit cda707f99e42a7c0fe1332987b2632e1fdc600a3.