The blog labeling system is currently {CATEGORY} {SUBCATEGORY} {YEAR} {NUMBER}. So something labeled C 65M 2023 02 would be Car category, '65 Mustang subcategory, posted in 2023, and it's post number 02.

Category Code Category Description
C Cars
N Nonprofit
R Rant
T Technology
W Woodworking
Subcategory Code Subcategory Description
65M '65 Mustang
67N '67 Nova
ENG Engineered Reform
SCI Science junk
ZZZ No Subcategory