Hello
Iam a researcher of biomechanics and now am studying about ergonomics.
So I would like to use your program as a task which is related with task difficulty. And I know this program can be used task difficuty (advanced/basic?). When I tried to this program there is error (Rich edit line insertion error). And I can not know what is the reason that program does not working well. Could you let me know how I can use the 'task difficuty' well?
thank you so much
