Classification
DUA - Text and document processing
83
DUAL - Typesetting - TeX/LaTeX
24
DOZ - Programming languages - Other
13
DTAD - MS - Word
10
DOQ - Programming languages - Internet
9
DSA - Computer graphics, image/photo editing
9
YDY - Media, media law
4
DNC - Internet
3
DTAO - Office applications (non-MS)
3
AMA - Education - general
2
DKAT - Computer utilities
2
DMA - Programming
2
DWA - Database systems
2
YPH - Secretarial work, office management
2
AHK - Scientific work
1
DIA - System programming
1
DKA - Operating systems
1
DKAI - Unix - operating system
1
DMC - Computer programs
1
DNA - Computer networks, local area networks
1
DOA - Programming languages - general
1
DOR - Programming languages - JAVA, C#, Mono, .NET
1
DPAD - Data mining, text mining, big data
1
DUAL - Textsatz - TeX/LaTeX
1
DVA - Data and file management
1
DWAC - Relational database systems
1
DYAA - Learning theory, adaptive systems
1
DYB - Neural networks and computing
1
DYG - Pattern recognition
1
YRB - Social sciences, sociology
1