TRUST & TRANSPARENCY
Contact & corrections
Operated by Lorenzo Luna in Argentina. Contact: lorenzo.m.luna.g@gmail.com.
What to send
For a calculation issue, include page, expected mathematical outcome, displayed outcome, and optional non-sensitive synthetic inputs. For a display issue, include browser and approximate screen size if useful. Screenshots are optional; remove personal information. Do not send printer files or client designs.
How we respond
The operator reviews reproducible errors against the published method. No response-time guarantee or technical support contract is offered. This channel does not provide printer operation, emergency or professional advice.
Use the email link above. Your email client opens; this website does not submit a form or upload files.
Policy version: beta-1.1. Policy review date: 2026-10-12.