Manifest files are the application definition standard for Varvara software.
A manifest.tal is a support library that populates a menubar with the application's shortcuts. You can see support coverage here, it is also used in the definition of applications in Potato.
@manifest 04 "Application $1 01 'n :file-new "New $1 01 'r :file-rename "Rename $1 01 'o :file-open "Open $1 01 's :file-save "Save $1 03 "Edit $1 01 'c :edit-copy "Copy $1 01 'v :edit-paste "Paste $1 01 'x :edit-cut "Cut $1 02 "Select $1 00 1b :select-reset "Reset $1 01 'a :select-all "All $1 $1