amtdisp(X); can be used for displaying information in the command window in AMT functions. The output of amtdisp depends on the start-up configuration of the AMT.
When the AMT is started in the 'verbose' mode, amtdisp will always display.
When the AMT is started in the 'documentation' mode, amtdisp will display unless supressed by the flag 'progress' is provided. Thus, amtdisp(in,'progress'); can be used as progress indicator when used in interactive way with the user but supress the progress in the documentation.
When the AMT is started in the 'silent' mode, amtdisp will never display.