Drafts of contributions can be found in my drafts

Here is a developing article: cylinder

Here is some stuff that got kicked out of Netpbm format: PPM examples

Incredio's user boxes
This user has a keen interest in physics.
This user is interested in meteorology.
This user attends or attended
MIT.
CUThis user is a student or alumnus of the University of Colorado.
This user is a secular humanist.
(1),
(n) → (n+1)
This user loves Mathematical Induction.
This user can program in Python.