File edit function is available under the actions <File operations> on the selected file.
– Edition in text mode, the file is replaced after touching « Save »
– It is necessary to know about the abc or bww format
– The ABC tutorial may help
– During an editing session an initial file copy (.bak) is created, allowing a revert action, if the change was not satisfying
– A revert action is available if a .bak file exists