| (subclass Emailing WrittenCommunication) | Media.kif 202-202 | 电邮 是 书面沟通 的 subclass |
| (subclass Emailing DoNetworkMessaging) | ComputerInput.kif 2921-2921 | 电邮 是 DoNetworkMessaging 的 subclass |
| (subclass ReceivingEmail Emailing) | ComputerInput.kif 2927-2927 | ReceivingEmail 是 电邮 的 subclass |
| (subclass SendingEmail Emailing) | ComputerInput.kif 2932-2932 | SendingEmail 是 电邮 的 subclass |
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