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Vector view allows you to easily add content and resize the view indefinitely, drawn in layers.

Thematic data layers
Data features and attributes are marked with the International Catalog of Coding Features and Attributes (FACC). main road networks; railway networks; hydrological drainage systems; utility networks (pipelines and communication lines); major airports; contours; coast; international borders; populated places; index of geographical names

Resolution levels
A product with a vector map is usually perceived as three different types: low resolution (level 0), medium resolution (level 1), and high resolution (level 2).

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Zero Level (VMAP0)
Level 0 provides geospatial data coverage worldwide and is equivalent to a small scale (1: 1,000,000). The data is offered on CD-ROM or as a direct download because it has been moved to the public domain. Data are structured according to Vector Product Format (VPF), [1] according to MIL-V-89039 and MIL-STD 2407

Datasets
Total coverage is divided into four data sets:
North America (NOAMER) v0noa; Europe and North Asia (EURNASIA) v0eur; South America, Africa and Antarctica (SOAMAFR) v0soa; South Asia and Australia (SASAUS) v0sas

Discussion on data availability
The U.S. Freedom of Information Act and the Electronic Information Act guarantee access to almost all

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GIS data created by the US government.
Following the trend in the US, a lot of data VMAP has offered on the public domain. But many countries in mapping and cartography hold it as a state monopoly; for such countries, VMAP Level1 data is stored outside the public domain. However, some data may be commercialized by the State Geodetic Administration, sometimes as a result of privatization. Various public groups are making efforts to transfer all VMAP1 data to the public domain in accordance with FOIA. Further steps have been taken by the Free World Foundation and others to have the data licensed under the GNU General Public License and others protected by copyright, as an alternative to the public domain. This is an ongoing debate (since 2006).

source https://en.wikipedia.org/wiki/Vector_Map