中国电子地图,可用于电子导航系统

UMP License v1.0 0. Preamble To goal of UMP (Unofficial Map Project) movement is a creation of Free vector Maps. The Maps distributed under this concept are free to obtain, modify and use for personal purposes. They are also free to modify and redistribute as far as Authors' credits and Freedom of the Map are not violated. 1. Acceptance of terms By using the Maps (any maps contained in this package or any accompanying data or software), you accept the terms of this License. Do not install or use the Maps if you do not agree with any of the License terms. 2. Free availability Any Maps covered by the License have to be distributed or redistributed free of charge. Only pure media costs may be charged under the condition that the channel free of media costs (like the Internet) is made available in parallel or is referred to. In such case the information about free distribution channel has to be visible before purchasing the media. 3. Freedom of use Any Map covered by the License may be used for any personal or educational purposes without limitations, including decompilation, modification, conversion and recompilation. Any professional use (including but not limited to commercial, governmental or military use) may require separate agreement with Authors if not stated otherwise. 4. Freedom of development The Maps covered by the License are free to modify and redistribute by anyone under the condition that Authors' credits are preserved and the modifications are distributed under the same or compatible license. Same rules apply to all works based on the Maps. The Maps covered by the License may be incorporated and shipped together with differently licensed works under the condition that the Maps are well separated and this License (which may not be violated) is clearly stated for that part. Additionally all competing or similar data contained in such product has to be released under the same or compatible license. 5. Open development If the Maps are distributed in the binary form, the source format has to be made available at the same time. As an alternative, source package my be referred to in case it is available through a channel free of media costs. Authors (or recent maintainer of the Maps) should be notified about any released modifications to their work. If this is not possible, modifications should be announced through community channels like map-authoring focused newsgroups, forums or webpages. 6. Disclaimer of warranties Authors take no responsibility for any direct or indirect damage resulting from the use of the Maps. All the data and software is provided "as is", the Maps shall be used at the sole responsibility of the user. Special care should be taken when using the data as navigation aid, as mapping data may be misleading, incomplete or incorrect.