Creating and editing saved kvtml files through Kanagram configure menu was possible in previous version of Kanagram that I had used in Ubuntu 14.04. Now the current Kanagram version 1.2 in Ubuntu 16.04 doesn't allow you to do that. Here's what I can see when I run kanagram from terminal and try to create own vocabulary - Checking path "/usr/share/apps/kvtml" for kvtml files Hspell: can't open /usr/share/hspell/hebrew.wgz.sizes. HSpellDict::HSpellDict: Init failed No language dictionaries for the language: "en-GB" org.kde.kanagram: Created game and engine helper org.kde.kanagram: Set all context properties org.kde.kanagram: Setup declarative engine org.kde.kanagram: Set qml file location Checking path "/usr/share/apps/kvtml" for kvtml files "Cannot lock file /usr/share/apps/kvtml/en/hard.kvtml" org.kde.kanagram: Saving file as QUrl("file:///home/user/.local/share/kvtml/en/test.kvtml") And after I close and re-open Kanagram again from terminal, I see this - Checking path "/home/user/.local/share/apps/kvtml" for kvtml files Checking path "/usr/share/apps/kvtml" for kvtml files Hspell: can't open /usr/share/hspell/hebrew.wgz.sizes. HSpellDict::HSpellDict: Init failed Above suggests that Kanagram saves files .local/share/kvtml while it checks path .local/share/apps/kvtml for kvtml files. Vocabulary editor is one of the great feature of Kanagram and the current documentation Kanagram also features this - https://docs.kde.org/trunk5/en/kdeedu/kanagram/configuring.html#vocab-editor
Fixed with https://cgit.kde.org/kanagram.git/commit/?id=da31b6eb425b5ac3bc3ea95766d2780f68233d4b by Albert Astals Cid <aacid@kde.org>