There are following types of add-ons using Tools menu:
・shell script type
・AppleScript type
・Application type
The location of add-ons is the add-ons folder inside the data folder. With default it becomes ~/Library/Application Support/Diary X/add-ons. File/directory configuration inside the directory is reflected on the tools menu.
You can use alias and/or symbolic link for all items include add-ons directory.
Short cut command+option+Letter added when '-(letter)' append to the tail of the file name. For example, if file name is sample-x.sh, short cut is command+option+X. Note that duplicated short cut is not work appropriately.
First 4 characters are not displayed as add-on name if the first 2 characters of file/directory name are able to interpret hexadecimal number and 3rd and 4th characters are '--'.
It is possible to make add-on and the directory in optional sequence display using above character sequence.
example:
01--test.sh => test
02--abc.pl => abc
When you choose an item of tools menu with pressing shift key, the item is opened by the default application.