CONVENTION: ‘$EQ$’, ‘$E$’, ‘eq$’ and ‘sym$’: Examples from the Psy` Psychrometrics package Gallery Tutorial [TECHNICAL SLIDE TRAIL] The Webel libraries for Wolfram Mathematica: With SysMLv1 models. Section SECTION: CASE STUDY: Applications of the Webel MTools class extensions to Psychrometrics (humid air physics). With SysMLv1 models.