You may want to launch an external application from within Notes documents without embedding or attaching files....
These two buttons give you great control over finding the file, storing the link and launching it.
You need two buttons and a field.
LinkPath (Text, Editable)
When you click the browse button you will get a File Browse dialog box. When you select a file it will store the full path in the LinkPath field. When you click the Launch button the file will be launched with its application.
Browse button formula
tmp :=@Prompt([LOCALBROWSE] ; "Browse"; "Select the file you wish to link to this document..."; 3); @Command([ViewRefreshFields]); FIELD LinkPath := @If(tmp=""; LinkPath; tmp);
Launch button formula
Very simple but effective.