OptInt PmWiki . ... Edit Page | ... MROI Delay Line Design Contract . ... PmWiki . ... Upgrades . ... PmWiki is designed to make it easy to upgrade the PmWiki software without affecting your existing data files or installation. For most upgrades, you simply copy the files in the new release over your existing installation. ... For example, if your existing PmWiki installation is in a directory called pmwiki , then one way to copy the new files over the existing ones is to enter the command: . ...