function sctCkResults = lick_cklinesdir_fetch(hSys, sCkType)
Checks all signal lines for disallowed graphical direction in conjunction with feedback loops. Also checks blocks in backward signal flow if they represent the only allowed exception of unit delays in a loop. Required appearance rules and libraries exempt from testing are retrieved from the current check configuration.
Check result structure <sctCkRes> always contains member <jExclLibs>, a java.util.HashSet with the libraries excluded from checks. Other members of that struct depend on the rule selected (see below).
Check type <sCkType> selects the rule to be checked (all from MAB 5.0) and might be one out of: - 'db_0141', check result structure <sctCkRes> will contain additional member <jBadBack>, a java.util.HashSet containing line handles with offending direction. - 'jc_0110', check result structure <sctCkRes> will contain additional member <jBadBlks>, a java.util.ArrayList containing blocks with offending orientation.