The LBR, or librarian, is used to maintain libraries of macro, object, and universal modules. The general form of the command line is: outputfile/switches,listfile/switches=inputfile/switches... Legal switches include: /CO:s:e:m:t Compress input to output library /CR:s:e:m:t:i Create library /DE:m Delete module /DF:t Specify default library type /DG:g Delete global /EP Include entry points in insert or replace /EX:m Extract module from library /IN Insert module into library /LI List modules names /LE List entry points of modules /FU List full module description /MH:m:op:op:op:op Modify universal module header /RP Replace module in library /SP Spool library listing to line printer /SS Give module selective search attribute /SZ Squeeze comments from macro upon insert