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PML2TrainingNotesWhat’sNewinPML2ObjectsandObjectmethodsFormnamesarenowprecededwith!!i.e.setupform_fredfollowedby:setupform!!fredresultsinanerrorbecause!!fredwasalreadydefinedinthepreviousassignmentFormsarenowloadeddynamicallyreturnerrornoalertallowsanerrortobereturnedwithoutanymessagesWhattoavoidinPML2Commandswithdollarsin$m-$m+$W25Numberedvariables$v1-120Thevarcommandvar!xnamevar!xreadSynonymsGlobalvariablesWhattoavoidinformsandmenusDotsingadgetnamesselectorgadgetsUserdataPixmapviewsAlertgadgetsRadiogroupsSimpleTextingadgetsNumbersatthebeginningofgadgetnamesWaitontoshowformsDolist/pane/selWhat’snotchangedinPML2Intheory,alloldPMLshouldworkinPDMS11.1.Verylittleoftheoldappwarehasbeenconvertedbecausethiswouldbeawasteofresources.Cadcentrepolicyonconvertingappwaretousenewfacilitiesistoonlyupgradeappwarewhenmodificationsarebeingmadeinthatarea.Theonlyexceptiontothis,iswherenewfacilitiesincorecodesupersedeorimprovefunctionalityanditisnecessarytowritenewcodetousetheextrafunctionality.NewEnvironmentVariablesPMLLIB/DIRECTORYNAMEThisisadirectorywhichissearchedwhenthesystemlooksforfunctionsandformsPMLTRACEON/OFFWhensettoON,PMLTRACEwilldisplayatraceofallmacroscalledintheunixcommandshell.Thiscanalsobeswitchedonoroffonthecommandline,soitisprobablybettertosetthevariabletooffandusecommandstocontroltraceasbefore.ThecommandinPDMSis-PMLTRACEON/OFFPMLCOMPILEON/OFFEnvironmentvariablePMLDEBUGONwillwriteatracefileAvailablevariabletypes$v1oldstylenotrecommended!aNamedvariablesbothglobalandlocal!!global!localNOTE:!aisevaluatedastextautomaticallybyusing$!A(earlyevaluation)NamedvariablesarenowtypedvariablesasoneofthefollowingSTRING‘TextinquotesorverticalbarsuptoaMaxof254?char’REALAnynumberBOOLEANTRUE,FALSEThesearenottexti.e.‘TRUE’,’FALSE’ARRAYAnytypeincludingarraysofarraysofanythingOBJECTSAcollectionofdifferentvariablesunderauserdefinedtypeVariablescanbepredefinedasaparticulartypeorreverttotypewhentheyaresetTherearetwowaysofsettingvariablesVar!a(25)!aisastring!a=25!aisareal!a=‘xyz’!ais