MyMidiGui is an IDL wrapper for some of the MIA and EWS routines which was originally written to support MIDI data analysis during service mode observations on Paranal. Since the first release ( Version 0.2 ), MyMidiGui has been extensively revised and integrated into the OYSTER environment. This enables easier plotting and analysis of MIDI data with OYSTER after having been reduced using MIA+EWS. The MyMidiGui major version numbers correspond to the compatible versions of MIA+EWS . ...