For Bruker pulse programs the first characters (usually 4, but at a maximum 6) specify the type of experiment, e.g. DEPT, COSY, NOESY etc.. Further properties of the pulse program are indicated by a two-character code, which is added to the name in alphabetical order. For 2-D experiments the default version is “absolute value” and “without dummy scans”. H- or X-decoupling is assumed to be default for heteronuclear experiments, but not for homonuclear ones (with the exception of inad). In case of redundant information some two-character codes may be omitted.