## Work philosophy

QAD has a different logic by QGIS and closer to popular CAD software.

To reduce learning time, QAD is inspired to the most popular CAD. This manual assumes that you have already the knowledge of the most popular CAD environment and commands. Otherwise use the appropriate documentation (there is a large amount of manuals) or search the command on internet.

QAD commands haven’t the same options as those of the most popular CAD since QGIS context is different (usually graphical options), some commands have more options. This manual describes only the options not present in the corresponding most popular CAD commands.

The current reference system of the project must be a projected coordinate system and not a geographic system.