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| hlavička P2 (A hidden section of an e-mail message. From the time a message is first created, information about it is added to the message header, including technical details, such as who created the message and the software used to compose it) | |||
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P : 28 phrases in 10 subjects |
| Astronomy | 5 |
| Chemistry | 3 |
| Construction | 1 |
| Environment | 1 |
| Finances | 1 |
| Forestry | 1 |
| Health care | 1 |
| Medical | 7 |
| Microsoft | 6 |
| Obsolete / dated | 2 |