External calls
Calls table windo is presented below. Call filename and path are displayed in the table

Call definition
Random variable definition dialog is presented below. Steps to define external call:
- Select executable (or script) file name
- Enter call command together with options or filenames
- Specify input files from which the application reads data
- Specify outputs files to which the application saves data

Calls in main tree
User has access to calls table by clicking an item "External calls" in main tree. It was demonstrated in picture below. Another way to open the calls window is to press icon.
