Enables/Disables keyboard inputs.
enablekeyb <flag>
The value of <flag> should be 1 for enabling and 0 for disabling.
When the value is 0, a user can not input while the macro is sending the data.
; Disabling a user input enablekeyb 0 for i 1 5 sendln 'date' wait '$' pause 5 next ; Enabling a user input enablekeyb 1 sendln 'cat > /tmp/foo.txt' pause 10 send $4 ; CTRL+D