Examples: UseLSX statement
UseLSX "appdll"
' The file appdll is loaded. Public definitions in the file
' are available to the module where the UseLSX statement
' appears.
const MyLib = "?appdll"
UseLSX MyLib
' Same as the preceding but if the file appdll.dll is not found,
' script continues to load and execute. A run-time error
' occurs if an unknown object is found.