Description of file categories

By default all files are categorized in one of the following categories:

Category	File types
E	Executables
D	Documents
A	Archives
G	Graphic files
T	Text
P	PDF files
M	Audio video format (media)
N	Android APK files
Z	Mail messages
O	Other (anything that is not recognized as one of the above)

These can be seen in the "file_info.file_type_category" field.