Macro file used by NeXtMidas, a networked MIDAS signal processing framework; contains a sequence of commands used to automate processes within the NeXtMidas application; can include procedures and subroutines.

Macros are convenient to use since they automate lengthy sequences of commands that are executed often. There are two types of macros used by NeXtMidas. One type is an installed macro with default values assigned to its parameters. This type can be installed by adding it to the command dictionary. The second type is a user macro, which is an uninstalled macro. This type cannot have default parameter values given by the system. MIDAS stands for Multi-user Interactive Development and Analysis System. NeXtMidas is a networked version of the MIDAS shell written in Java. It is used to manipulate digitized signals and other signal collection and processing systems data. It's primary mode of operation is responding to text commands, which makes the use of MM macro files important. NOTE: NeXtMidas requires Java 6 or later in order to run.

Source code file written in both the Objective-C and C++ programming languages; differs from an .M file, which only contains Objective-C code; used for including C++ code within Mac-based applications.