Defines starting with `e' in netccitt

• ERROR_PACKET netccitt/pk.h:94
• EXCAB netccitt/x25err.h:60
• EXCBUSY netccitt/x25err.h:55
• EXCINV netccitt/x25err.h:59
• EXCLEAR netccitt/x25err.h:54
• EXCLPE netccitt/x25err.h:61
• EXCNCG netccitt/x25err.h:62
• EXCNOB netccitt/x25err.h:63
• EXCOUT netccitt/x25err.h:56
• EXCRPE netccitt/x25err.h:57
• EXRESET netccitt/x25err.h:48
• EXRLPE netccitt/x25err.h:51
• EXROUT netccitt/x25err.h:49
• EXRRPE netccitt/x25err.h:50